Add Verify stage metadata to CI docs

doc/administration/environment_variables.md

+---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+type: reference
+---
+
 # Environment Variables
 
 GitLab exposes certain environment variables which can be used to override

doc/administration/external_pipeline_validation.md

+---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+type: reference, howto
+---
+
 # External Pipeline Validation
 
 You can use an external service for validating a pipeline before it's created.

doc/administration/feature_flags.md

 ---
+stage: Release
+group: Progressive Delivery
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: reference
 description: "GitLab administrator: enable and disable GitLab features deployed behind feature flags"
 ---

doc/administration/job_artifacts.md

+---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+type: reference, howto
+---
+
 # Jobs artifacts administration
 
 > - Introduced in GitLab 8.2 and GitLab Runner 0.7.0.

doc/administration/job_logs.md

+---
+stage: Verify
+group: Runner
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+type: reference
+---
+
 # Job logs
 
 > [Renamed from job traces to job logs](https://gitlab.com/gitlab-org/gitlab/-/issues/29121) in GitLab 12.5.

doc/ci/README.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 comments: false
 description: "Learn how to use GitLab CI/CD, the GitLab built-in Continuous Integration, Continuous Deployment, and Continuous Delivery toolset to build, test, and deploy your application."
 type: index

doc/ci/caching/index.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: index, concepts, howto
 ---
 

doc/ci/chatops/README.md

 ---
+stage: Configure
+group: Configure
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: index, concepts, howto
 ---
 

doc/ci/ci_cd_for_external_repos/bitbucket_integration.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: howto
 ---
 

doc/ci/ci_cd_for_external_repos/github_integration.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: howto
 ---
 

doc/ci/ci_cd_for_external_repos/index.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: index, howto
 ---
 

doc/ci/directed_acyclic_graph/index.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: reference
 ---
 

doc/ci/docker/README.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 comments: false
 type: index
 ---

doc/ci/docker/using_docker_build.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: concepts, howto
 ---
 

doc/ci/docker/using_docker_images.md

 ---
+stage: Verify
+group: Runner
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: concepts, howto
 ---
 

doc/ci/docker/using_kaniko.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: howto
 ---
 

doc/ci/enable_or_disable_ci.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: howto
 ---
 

doc/ci/environments/incremental_rollouts.md

 ---
+stage: Release
+group: Progressive Delivery
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 type: concepts, howto
 ---
 

doc/ci/examples/README.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 comments: false
 type: index
 ---

doc/ci/examples/artifactory_and_gitlab/index.md

 ---
+stage: Verify
+group: Continuous Integration
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
 disqus_identifier: 'https://docs.gitlab.com/ee/articles/artifactory_and_gitlab/index.html'
 author: Fabio Busatto
 author_gitlab: bikebilly