Auto-DevOps.gitlab-ci.yml

Based on the auto-deploy-0.2.0 version of Kubernetes-with-canary.gitlab-ci.yml, this template:

• Comments out staging and canaries
• Makes automatic deployment to production the default
• Adds Code Climate (soon to be renamed)
• Adds tests
• Fixes a few other things

Scenarios to cover:

• Ruby/Rails, Node, Java
• no database, sqlite, postgres
• Dockerfile, no Dockerfile
• tests, no tests
• Private, public projects
• GitLab.com w/ shared runners, k8s cluster, GitLab.com w/ k8s runners

Test plan:

• minimal-ruby-app on gitlab.com

  • topic branch
  • merge to master
  • uncomment staging, canary, and production's when: manual
  • manually deploy to canary
  • manually deploy to production
  • scale PRODUCTION_REPLICAS and CANARY_PRODUCTION_REPLICAS and redeploy

• minimal-ruby-app on k8s cluster

  • topic branch
  • merge to master
  • uncomment staging, canary, and production's when: manual
  • manually deploy to canary
  • manually deploy to production

• rails template on gitlab.com

  • topic branch
  • merge to master
  • uncomment staging, canary, and production's when: manual
  • manually deploy to canary
  • manually deploy to production

• spring template on gitlab.com

  • topic branch
  • merge to master

• node template on gitlab.com

  • topic branch
  • merge to master

• Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/36870

• Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/34040