Prepare automatic tests that cover GitLab QA

Checklist:

Login

• Regular account login
• LDAP login
  • Add QA specs for LDAP login: !124 (merged) & gitlab-ce!16914
  • Add LDAP SSL integration tests: #59 (closed)
  • 2 Factor Auth with LDAP: https://gitlab.com/gitlab-org/gitlab-ce/issues/52702
• SAML login => #257 (closed)

Forks => #264 (closed)

• Fork group project
• Push changes to fork
• Submit merge request to origin project
• Accept merge request

Wiki => #263 (closed)

• Access and modify an existing wiki
• Create new wiki
• Clone wiki repository

SSH => #265 (closed)

• Add SSH key
• Remove SSH key
• git clone, git push over SSH

Git

• git clone, git push over HTTP with regular account
• git clone, git push over HTTP with LDAP account: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/21354
• Shallow clones (git clone --depth 1)
• Push to protected branch
• Rebase a MR
• Add QA test for SSH key sizes > 4096: #183 (closed)
• Test deploy keys: #148 (closed)

Project

• Create project
• Create project via repository import
• Transfer project to new owner
• Rename project's repository path
• Add project member
• Remove project member
• Remove project
• Create branch via UI
• Create tag via UI

Web editor

• Create a new file via UI => https://gitlab.com/gitlab-org/gitlab-ce/issues/48464
• Edit a file via UI => https://gitlab.com/gitlab-org/gitlab-ce/issues/48464
• Upload a new file via UI
• Replace a file via UI
• Remove a file via UI => https://gitlab.com/gitlab-org/gitlab-ce/issues/48464

Group

• Create group
• Create project in group's namespace
• Add group member
• Remove group member
• Remove group

Markdown

• Visit / clone [relative links repository] and see if the links are linking to the correct documents in the repository
• Check if images are rendered in the repository's README
• Click on a directory link and see if it correctly takes to the tree view
• Click on a file link and see if it correctly takes to the blob view
• Check if the links in the README when viewed as a blob are correct
• Select the markdown branch and check if all links point to the files within the markdown branch

Syntax highlighting

• Visit/clone [language highlight repository]
• Check for obvious errors in highlighting

Upgrader

• Upgrade from the previous release
• Run the upgrader script in this release (it should not break)

Rake tasks

• Check if rake gitlab:check is updated and works
• Check if rake gitlab:env:info is updated and works

Container registry

• Check if push works
• Check if pull works

Git Annex

• Check if push works
• Check if pull works

Git LFS

• Check if push works
• Check if pull works

Omnibus

• Configure relative URLs
• Configure custom ports for external_url and registry_external_url

GitLab Runner

• Install GitLab Runner
• Add GitLab Runner to the project
• Add CI job that fails
• Add CI job that succeeds
• Remove Runner from the project

Upgrades

• Test upgrade when using MySQL
• Test upgrade when using PostgreSQL

Kerberos

• User login
• git push/pull via HTTPS

Other things

• CORS