ci: Update build matrix

.gitlab-ci.yml

@@ -42,11 +42,11 @@ variables:
   script:
     - find build/
     - icinga-build-upload-aptly
-  # TODO: enable when switching to GitLab CI
   only:
     - nonexisting_branch
-  #  - tags
+  # TODO: enable when switching to GitLab CI
   #  - master
+  #  - tags
 
 ###################################
 # EPEL
@@ -159,23 +159,6 @@ upload/SUSE/12.4:
   dependencies:
     - build/sles/12.4
 
-build/sles/12.3:
-  <<: *build
-  variables:
-    DOCKER_IMAGE: sles/12.3
-
-test/sles/12.3:
-  <<: *test
-  variables:
-    DOCKER_IMAGE: sles/12.3
-  dependencies:
-    - build/sles/12.3
-
-upload/SUSE/12.3:
-  <<: *upload
-  dependencies:
-    - build/sles/12.3
-
 ###################################
 # openSUSE
 ###################################
@@ -195,20 +178,3 @@ upload/openSUSE/15.0:
   <<: *upload
   dependencies:
     - build/opensuse/15.0
-
-build/opensuse/42.3:
-  <<: *build
-  variables:
-    DOCKER_IMAGE: opensuse/42.3
-
-test/opensuse/42.3:
-  <<: *test
-  variables:
-    DOCKER_IMAGE: opensuse/42.3
-  dependencies:
-    - build/opensuse/42.3
-
-upload/openSUSE/42.3:
-  <<: *upload
-  dependencies:
-    - build/opensuse/42.3