clients/tests: add Util.debug_dbus_interface() helper function

clients/tests/test-client.check-on-disk/test_001-001.expected

-location: clients/tests/test-client.py:651:test_001()/1
+location: clients/tests/test-client.py:656:test_001()/1
 cmd: $NMCLI 
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-002.expected

-location: clients/tests/test-client.py:651:test_001()/2
+location: clients/tests/test-client.py:656:test_001()/2
 cmd: $NMCLI 
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-003.expected

-location: clients/tests/test-client.py:653:test_001()/3
+location: clients/tests/test-client.py:658:test_001()/3
 cmd: $NMCLI -f AP -mode multiline -p d show wlan0
 lang: C
 returncode: 10

clients/tests/test-client.check-on-disk/test_001-004.expected

-location: clients/tests/test-client.py:653:test_001()/4
+location: clients/tests/test-client.py:658:test_001()/4
 cmd: $NMCLI -f AP -mode multiline -p d show wlan0
 lang: pl_PL.UTF-8
 returncode: 10

clients/tests/test-client.check-on-disk/test_001-005.expected

-location: clients/tests/test-client.py:655:test_001()/5
+location: clients/tests/test-client.py:660:test_001()/5
 cmd: $NMCLI c s
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-006.expected

-location: clients/tests/test-client.py:655:test_001()/6
+location: clients/tests/test-client.py:660:test_001()/6
 cmd: $NMCLI c s
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-007.expected

-location: clients/tests/test-client.py:657:test_001()/7
+location: clients/tests/test-client.py:662:test_001()/7
 cmd: $NMCLI bogus s
 lang: C
 returncode: 2

clients/tests/test-client.check-on-disk/test_001-008.expected

-location: clients/tests/test-client.py:657:test_001()/8
+location: clients/tests/test-client.py:662:test_001()/8
 cmd: $NMCLI bogus s
 lang: pl_PL.UTF-8
 returncode: 2

clients/tests/test-client.check-on-disk/test_001-009.expected

-location: clients/tests/test-client.py:665:test_001()/9
+location: clients/tests/test-client.py:670:test_001()/9
 cmd: $NMCLI general permissions
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-010.expected

-location: clients/tests/test-client.py:665:test_001()/10
+location: clients/tests/test-client.py:670:test_001()/10
 cmd: $NMCLI general permissions
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-011.expected

-location: clients/tests/test-client.py:665:test_001()/11
+location: clients/tests/test-client.py:670:test_001()/11
 cmd: $NMCLI --pretty general permissions
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-012.expected

-location: clients/tests/test-client.py:665:test_001()/12
+location: clients/tests/test-client.py:670:test_001()/12
 cmd: $NMCLI --pretty general permissions
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-013.expected

-location: clients/tests/test-client.py:665:test_001()/13
+location: clients/tests/test-client.py:670:test_001()/13
 cmd: $NMCLI --terse general permissions
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-014.expected

-location: clients/tests/test-client.py:665:test_001()/14
+location: clients/tests/test-client.py:670:test_001()/14
 cmd: $NMCLI --terse general permissions
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-015.expected

-location: clients/tests/test-client.py:665:test_001()/15
+location: clients/tests/test-client.py:670:test_001()/15
 cmd: $NMCLI --mode tabular general permissions
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-016.expected

-location: clients/tests/test-client.py:665:test_001()/16
+location: clients/tests/test-client.py:670:test_001()/16
 cmd: $NMCLI --mode tabular general permissions
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-017.expected

-location: clients/tests/test-client.py:665:test_001()/17
+location: clients/tests/test-client.py:670:test_001()/17
 cmd: $NMCLI --mode tabular --pretty general permissions
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-018.expected

-location: clients/tests/test-client.py:665:test_001()/18
+location: clients/tests/test-client.py:670:test_001()/18
 cmd: $NMCLI --mode tabular --pretty general permissions
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-019.expected

-location: clients/tests/test-client.py:665:test_001()/19
+location: clients/tests/test-client.py:670:test_001()/19
 cmd: $NMCLI --mode tabular --terse general permissions
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-020.expected

-location: clients/tests/test-client.py:665:test_001()/20
+location: clients/tests/test-client.py:670:test_001()/20
 cmd: $NMCLI --mode tabular --terse general permissions
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-021.expected

-location: clients/tests/test-client.py:665:test_001()/21
+location: clients/tests/test-client.py:670:test_001()/21
 cmd: $NMCLI --mode multiline general permissions
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-022.expected

-location: clients/tests/test-client.py:665:test_001()/22
+location: clients/tests/test-client.py:670:test_001()/22
 cmd: $NMCLI --mode multiline general permissions
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-023.expected

-location: clients/tests/test-client.py:665:test_001()/23
+location: clients/tests/test-client.py:670:test_001()/23
 cmd: $NMCLI --mode multiline --pretty general permissions
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-024.expected

-location: clients/tests/test-client.py:665:test_001()/24
+location: clients/tests/test-client.py:670:test_001()/24
 cmd: $NMCLI --mode multiline --pretty general permissions
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-025.expected

-location: clients/tests/test-client.py:665:test_001()/25
+location: clients/tests/test-client.py:670:test_001()/25
 cmd: $NMCLI --mode multiline --terse general permissions
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_001-026.expected

-location: clients/tests/test-client.py:665:test_001()/26
+location: clients/tests/test-client.py:670:test_001()/26
 cmd: $NMCLI --mode multiline --terse general permissions
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-001.expected

-location: clients/tests/test-client.py:670:test_002()/1
+location: clients/tests/test-client.py:675:test_002()/1
 cmd: $NMCLI d
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-002.expected

-location: clients/tests/test-client.py:670:test_002()/2
+location: clients/tests/test-client.py:675:test_002()/2
 cmd: $NMCLI d
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-003.expected

-location: clients/tests/test-client.py:672:test_002()/3
+location: clients/tests/test-client.py:677:test_002()/3
 cmd: $NMCLI -f all d
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-004.expected

-location: clients/tests/test-client.py:672:test_002()/4
+location: clients/tests/test-client.py:677:test_002()/4
 cmd: $NMCLI -f all d
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-005.expected

-location: clients/tests/test-client.py:674:test_002()/5
+location: clients/tests/test-client.py:679:test_002()/5
 cmd: $NMCLI 
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-006.expected

-location: clients/tests/test-client.py:674:test_002()/6
+location: clients/tests/test-client.py:679:test_002()/6
 cmd: $NMCLI 
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-007.expected

-location: clients/tests/test-client.py:676:test_002()/7
+location: clients/tests/test-client.py:681:test_002()/7
 cmd: $NMCLI -f AP -mode multiline d show wlan0
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-008.expected

-location: clients/tests/test-client.py:676:test_002()/8
+location: clients/tests/test-client.py:681:test_002()/8
 cmd: $NMCLI -f AP -mode multiline d show wlan0
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-009.expected

-location: clients/tests/test-client.py:677:test_002()/9
+location: clients/tests/test-client.py:682:test_002()/9
 cmd: $NMCLI -f AP -mode multiline -p d show wlan0
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-010.expected

-location: clients/tests/test-client.py:677:test_002()/10
+location: clients/tests/test-client.py:682:test_002()/10
 cmd: $NMCLI -f AP -mode multiline -p d show wlan0
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-011.expected

-location: clients/tests/test-client.py:678:test_002()/11
+location: clients/tests/test-client.py:683:test_002()/11
 cmd: $NMCLI -f AP -mode multiline -t d show wlan0
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-012.expected

-location: clients/tests/test-client.py:678:test_002()/12
+location: clients/tests/test-client.py:683:test_002()/12
 cmd: $NMCLI -f AP -mode multiline -t d show wlan0
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-013.expected

-location: clients/tests/test-client.py:679:test_002()/13
+location: clients/tests/test-client.py:684:test_002()/13
 cmd: $NMCLI -f AP -mode tabular d show wlan0
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-014.expected

-location: clients/tests/test-client.py:679:test_002()/14
+location: clients/tests/test-client.py:684:test_002()/14
 cmd: $NMCLI -f AP -mode tabular d show wlan0
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-015.expected

-location: clients/tests/test-client.py:680:test_002()/15
+location: clients/tests/test-client.py:685:test_002()/15
 cmd: $NMCLI -f AP -mode tabular -p d show wlan0
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-016.expected

-location: clients/tests/test-client.py:680:test_002()/16
+location: clients/tests/test-client.py:685:test_002()/16
 cmd: $NMCLI -f AP -mode tabular -p d show wlan0
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-017.expected

-location: clients/tests/test-client.py:681:test_002()/17
+location: clients/tests/test-client.py:686:test_002()/17
 cmd: $NMCLI -f AP -mode tabular -t d show wlan0
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-018.expected

-location: clients/tests/test-client.py:681:test_002()/18
+location: clients/tests/test-client.py:686:test_002()/18
 cmd: $NMCLI -f AP -mode tabular -t d show wlan0
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-019.expected

-location: clients/tests/test-client.py:683:test_002()/19
+location: clients/tests/test-client.py:688:test_002()/19
 cmd: $NMCLI -f ALL d wifi
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-020.expected

-location: clients/tests/test-client.py:683:test_002()/20
+location: clients/tests/test-client.py:688:test_002()/20
 cmd: $NMCLI -f ALL d wifi
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-021.expected

-location: clients/tests/test-client.py:685:test_002()/21
+location: clients/tests/test-client.py:690:test_002()/21
 cmd: $NMCLI c
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-022.expected

-location: clients/tests/test-client.py:685:test_002()/22
+location: clients/tests/test-client.py:690:test_002()/22
 cmd: $NMCLI c
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-023.expected

-location: clients/tests/test-client.py:687:test_002()/23
+location: clients/tests/test-client.py:692:test_002()/23
 cmd: $NMCLI c s con-1
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_002-024.expected

-location: clients/tests/test-client.py:687:test_002()/24
+location: clients/tests/test-client.py:692:test_002()/24
 cmd: $NMCLI c s con-1
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-001.expected

-location: clients/tests/test-client.py:697:test_003()/1
+location: clients/tests/test-client.py:702:test_003()/1
 cmd: $NMCLI c add type ethernet ifname '*' con-name con-xx1
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-002.expected

-location: clients/tests/test-client.py:700:test_003()/2
+location: clients/tests/test-client.py:705:test_003()/2
 cmd: $NMCLI c s
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-003.expected

-location: clients/tests/test-client.py:700:test_003()/3
+location: clients/tests/test-client.py:705:test_003()/3
 cmd: $NMCLI c s
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-004.expected

-location: clients/tests/test-client.py:705:test_003()/4
+location: clients/tests/test-client.py:710:test_003()/4
 cmd: $NMCLI c add type ethernet ifname '*'
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-005.expected

-location: clients/tests/test-client.py:708:test_003()/5
+location: clients/tests/test-client.py:713:test_003()/5
 cmd: $NMCLI c s
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-006.expected

-location: clients/tests/test-client.py:708:test_003()/6
+location: clients/tests/test-client.py:713:test_003()/6
 cmd: $NMCLI c s
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-007.expected

-location: clients/tests/test-client.py:711:test_003()/7
+location: clients/tests/test-client.py:716:test_003()/7
 cmd: $NMCLI -f ALL c s
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-008.expected

-location: clients/tests/test-client.py:711:test_003()/8
+location: clients/tests/test-client.py:716:test_003()/8
 cmd: $NMCLI -f ALL c s
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-009.expected

-location: clients/tests/test-client.py:715:test_003()/9
+location: clients/tests/test-client.py:720:test_003()/9
 cmd: $NMCLI --complete-args -f ALL c s ''
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-010.expected

-location: clients/tests/test-client.py:715:test_003()/10
+location: clients/tests/test-client.py:720:test_003()/10
 cmd: $NMCLI --complete-args -f ALL c s ''
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-011.expected

-location: clients/tests/test-client.py:728:test_003()/11
+location: clients/tests/test-client.py:733:test_003()/11
 cmd: $NMCLI con up ethernet ifname eth0
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-012.expected

-location: clients/tests/test-client.py:731:test_003()/12
+location: clients/tests/test-client.py:736:test_003()/12
 cmd: $NMCLI con
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-013.expected

-location: clients/tests/test-client.py:731:test_003()/13
+location: clients/tests/test-client.py:736:test_003()/13
 cmd: $NMCLI con
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-014.expected

-location: clients/tests/test-client.py:734:test_003()/14
+location: clients/tests/test-client.py:739:test_003()/14
 cmd: $NMCLI -f ALL con
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-015.expected

-location: clients/tests/test-client.py:734:test_003()/15
+location: clients/tests/test-client.py:739:test_003()/15
 cmd: $NMCLI -f ALL con
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-016.expected

-location: clients/tests/test-client.py:737:test_003()/16
+location: clients/tests/test-client.py:742:test_003()/16
 cmd: $NMCLI -f ALL con s -a
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-017.expected

-location: clients/tests/test-client.py:737:test_003()/17
+location: clients/tests/test-client.py:742:test_003()/17
 cmd: $NMCLI -f ALL con s -a
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-018.expected

-location: clients/tests/test-client.py:740:test_003()/18
+location: clients/tests/test-client.py:745:test_003()/18
 cmd: $NMCLI -f ACTIVE-PATH,DEVICE,UUID con s -act
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-019.expected

-location: clients/tests/test-client.py:740:test_003()/19
+location: clients/tests/test-client.py:745:test_003()/19
 cmd: $NMCLI -f ACTIVE-PATH,DEVICE,UUID con s -act
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-020.expected

-location: clients/tests/test-client.py:743:test_003()/20
+location: clients/tests/test-client.py:748:test_003()/20
 cmd: $NMCLI -f UUID,NAME con s --active
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-021.expected

-location: clients/tests/test-client.py:743:test_003()/21
+location: clients/tests/test-client.py:748:test_003()/21
 cmd: $NMCLI -f UUID,NAME con s --active
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-022.expected

-location: clients/tests/test-client.py:746:test_003()/22
+location: clients/tests/test-client.py:751:test_003()/22
 cmd: $NMCLI -f ALL con s ethernet
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-023.expected

-location: clients/tests/test-client.py:746:test_003()/23
+location: clients/tests/test-client.py:751:test_003()/23
 cmd: $NMCLI -f ALL con s ethernet
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-024.expected

-location: clients/tests/test-client.py:749:test_003()/24
+location: clients/tests/test-client.py:754:test_003()/24
 cmd: $NMCLI -f GENERAL.STATE con s ethernet
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-025.expected

-location: clients/tests/test-client.py:749:test_003()/25
+location: clients/tests/test-client.py:754:test_003()/25
 cmd: $NMCLI -f GENERAL.STATE con s ethernet
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-026.expected

-location: clients/tests/test-client.py:752:test_003()/26
+location: clients/tests/test-client.py:757:test_003()/26
 cmd: $NMCLI con s ethernet
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-027.expected

-location: clients/tests/test-client.py:752:test_003()/27
+location: clients/tests/test-client.py:757:test_003()/27
 cmd: $NMCLI con s ethernet
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-028.expected

-location: clients/tests/test-client.py:755:test_003()/28
+location: clients/tests/test-client.py:760:test_003()/28
 cmd: $NMCLI -f ALL dev s eth0
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-029.expected

-location: clients/tests/test-client.py:755:test_003()/29
+location: clients/tests/test-client.py:760:test_003()/29
 cmd: $NMCLI -f ALL dev s eth0
 lang: pl_PL.UTF-8
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-030.expected

-location: clients/tests/test-client.py:758:test_003()/30
+location: clients/tests/test-client.py:763:test_003()/30
 cmd: $NMCLI -f ALL dev show eth0
 lang: C
 returncode: 0

clients/tests/test-client.check-on-disk/test_003-031.expected

-location: clients/tests/test-client.py:758:test_003()/31
+location: clients/tests/test-client.py:763:test_003()/31