nmcli: fix return code on "nmcli device connect" error
Before:
$ nmcli device connect veth0; echo $?
Error: Connection activation failed: (5) IP configuration could not be reserved (no available address, timeout, etc.).
0
After
$ nmcli device connect veth0; echo $?
Error: Connection activation failed: IP configuration could not be reserved (no available address, timeout, etc.).
4