Fix conditional for installing UBUNTU_DEBS

We were checking for the DEBIAN_DEBS variable but installing UBUNTU_DEBS
in the ubuntu template. Fixes to use UBUNTU_DEBS in both cases.
50 jobs for ubuntu-fix in 36 minutes and 46 seconds (queued for 9 seconds)
Status Job ID Name Coverage
  Bootstrapping
passed #992918
bootstrap

00:05:09

passed #992919
aarch64
bootstrap@arm64v8

00:06:43

 
  Alpine Container Build
passed #992922
alpine-forced:latest@container-ifnot-exists

00:01:05

passed #992920
alpine:latest@container-build

00:01:17

passed #992921
aarch64
alpine:latest@container-build@arm64v8

00:00:54

 
  Alpine Check
passed #992925
alpine-forced-ifnot-exists:latest@check

00:00:34

passed #992923
alpine:latest@check

00:00:17

passed #992924
aarch64
alpine:latest@@check@arm64v8

00:00:15

passed #992926
alpine:latest@container-ifnot-exists

00:00:31

 
  Arch Container Build
passed #992927
arch@container-build

00:02:48

passed #992986
arch-forced@container-ifnot-exists

00:00:21

passed #992984
arch-forced@container-ifnot-exists

00:02:47

failed #992928
arch-forced@container-ifnot-exists

00:06:09

 
  Arch Check
passed #992929
arch@check

00:00:39

passed #992931
arch@container-ifnot-exists

00:00:19

passed #992930
arch-forced-ifnot-exists@check

00:00:38

 
  Centos Container Build
passed #992932
centos:7@container-build

00:01:34

passed #992933
centos:8@container-build

00:01:30

passed #992934
centos-forced:8@container-ifnot-exists

00:01:33

 
  Centos Check
passed #992935
centos:7@check

00:00:18

passed #992936
centos:8@check

00:00:23

passed #992938
centos:8@container-ifnot-exists

00:00:19

passed #992937
centos-forced-ifnot-exists:8@check

00:00:18

 
  Ubuntu Container Build
passed #992942
ubuntu:18.04@container-build

00:01:08

passed #992939
ubuntu:18.10@container-build

00:01:09

passed #992940
aarch64
ubuntu:18.10@container-build@arm64v8

00:01:05

passed #992941
ubuntu-forced:18.10@container-ifnot-exists

00:01:05

 
  Ubuntu Check
passed #992947
ubuntu:18.04@check

00:00:15

passed #992943
ubuntu:18.10@check

00:00:15

passed #992944
aarch64
ubuntu:18.10@check@arm64v8

00:00:15

passed #992946
ubuntu:18.10@container-ifnot-exists

00:00:27

passed #992945
ubuntu:forced-ifnot-exists@check

00:00:15

 
  Debian Container Build
passed #992951
debian:buster@container-build

00:01:09

passed #992950
debian-forced:stretch@container-ifnot-exists

00:01:50

passed #992948
debian:stretch@container-build

00:01:12

passed #992949
aarch64
debian:stretch@container-build@arm64v8

00:01:02

 
  Debian Check
passed #992956
debian:buster@check

00:00:19

passed #992954
debian:forced-ifnot-exists@check

00:00:30

passed #992952
debian:stretch@check

00:00:28

passed #992953
aarch64
debian:stretch@check@arm64v8

00:00:22

passed #992955
debian:stretch@container-ifnot-exists

00:00:29

 
  Fedora Container Build
passed #992957
fedora:29@container-build

00:04:58

passed #992959
aarch64
fedora:30@container-build@arm64v8

00:02:31

passed #992960
fedora-forced:rawhide@container-ifnot-exists

00:04:52

passed #992958
fedora:rawhide@container-build

00:05:34

 
  Fedora Check
passed #992961
fedora:29@check

00:00:27

passed #992963
aarch64
fedora:30@check@arm64v8

00:00:17

passed #992964
fedora-forced-ifnot-exists:rawhide@check

00:00:24

passed #992962
fedora:rawhide@check

00:00:39

passed #992965
fedora:rawhide@container-ifnot-exists

00:00:23