Add ansible linting to the CI

.gitlab-ci.yml

@@ -36,6 +36,12 @@ linters:
   # Be nice to new contributors, but please use `tox`
   allow_failure: true
 
+# Ansible linter
+ansible-linter:
+  stage: quality-assurance
+  image: otthorn/nk20_ci_ansiblelint
+  script: ansible-lint ansible/
+
 # Compile documentation
 documentation:
   stage: docs