Merge branch 'update-yamllint-to-metrics-yamls' into 'master'

Update yamllint job to check metrics definitions

See merge request gitlab-org/gitlab!80770

.gitlab/ci/yaml.gitlab-ci.yml

@@ -11,3 +11,15 @@ lint-yaml:
     LINT_PATHS: .gitlab-ci.yml .gitlab/ci lib/gitlab/ci/templates data/deprecations data/removals data/whats_new
   script:
     - yamllint --strict -f colored $LINT_PATHS
+
+lint-metrics-yaml:
+  extends:
+    - .default-retry
+    - .yaml-lint:rules
+  image: pipelinecomponents/yamllint:latest
+  stage: lint
+  needs: []
+  variables:
+    LINT_PATHS: config/metrics
+  script:
+    - 'yamllint --strict -f colored -d "{extends: default, rules: {line-length: disable, document-start: disable, indentation: {spaces: 2, indent-sequences: whatever}}}" $LINT_PATHS'