Update gitlab-ci OS versions

6 jobs for master in 5 minutes and 46 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #34770
docker
build centos 8

00:02:51

passed #34771
docker
build opensuse 15.1

00:02:57

passed #34772
docker
build sles 15.1

00:04:00

 
  Test
passed #34773
docker
test centos 8

00:00:50

passed #34774
docker
test opensuse 15.1

00:00:55

passed #34775
docker
test sles 15.1

00:01:40