Consolidate graphql verification tasks

This combines our schema and docs verification tasks with the new query
validation task.

Since the new task is not doc specific, the rules section for this has
been renamed.

.gitlab-ci.yml

@@ -110,4 +110,4 @@ include:
   - local: .gitlab/ci/notify.gitlab-ci.yml
   - local: .gitlab/ci/dast.gitlab-ci.yml
   - local: .gitlab/ci/workhorse.gitlab-ci.yml
-  - local: .gitlab/ci/graphql-ci.yml
+  - local: .gitlab/ci/graphql.gitlab-ci.yml

.gitlab/ci/docs.gitlab-ci.yml

@@ -84,16 +84,3 @@ ui-docs-links lint:
   needs: []
   script:
     - bundle exec haml-lint -i DocumentationLinks
-
-graphql-reference-verify:
-  extends:
-    - .default-retry
-    - .rails-cache
-    - .default-before_script
-    - .docs:rules:graphql-reference-verify
-    - .use-pg11
-  stage: test
-  needs: ["setup-test-env"]
-  script:
-    - bundle exec rake gitlab:graphql:check_docs
-    - bundle exec rake gitlab:graphql:check_schema

.gitlab/ci/graphql-ci.yml → .gitlab/ci/graphql.gitlab-ci.yml

-graphql-query-validate:
+graphql-verify:
   extends:
-    - .static-analysis-base
+    - .default-retry
+    - .rails-cache
+    - .default-before_script
+    - .graphql:rules:graphql-verify
   stage: test
   needs: ["setup-test-env"]
   script:
     - bundle exec rake gitlab:graphql:validate
+    - bundle exec rake gitlab:graphql:check_docs
+    - bundle exec rake gitlab:graphql:check_schema

.gitlab/ci/rules.gitlab-ci.yml

@@ -349,7 +349,11 @@
       changes: *docs-patterns
       when: on_success
 
-.docs:rules:graphql-reference-verify:
+##################
+# GraphQL rules  #
+##################
+
+.graphql:rules:graphql-verify:
   rules:
     - <<: *if-not-ee
       when: never