Merge branch 'feature/sles-15-0' into 'master'

Drop SLES 15.0

See merge request !14

.gitlab-ci.yml

@@ -227,23 +227,6 @@ upload/SUSE/15.1:
   dependencies:
     - build/sles/15.1
 
-build/sles/15.0:
-  <<: *build
-  variables:
-    DOCKER_IMAGE: sles/15.0
-
-test/sles/15.0:
-  <<: *test
-  variables:
-    DOCKER_IMAGE: sles/15.0
-  dependencies:
-    - build/sles/15.0
-
-upload/SUSE/15.0:
-  <<: *upload
-  dependencies:
-    - build/sles/15.0
-
 build/sles/12.5:
   <<: *build
   variables: