Prepare 10.8 RC6 release

See merge request gitlab-org/gitlab-ce!18859

Resolve "Incorrect documentation for .gitlab-ci.yml cache:key default value"

Closes #45840

See merge request gitlab-org/gitlab-ce!18841

Add tmp index to ci_builds to optimize stages migration

Closes #46179

See merge request gitlab-org/gitlab-ce!18844

Add missing pipeline build foreign key to the schema

See merge request gitlab-org/gitlab-ce!18846

Prepare 10.8 RC5 release

See merge request gitlab-org/gitlab-ce!18839

Fixed empty editors in the IDE

Closes #46153

See merge request gitlab-org/gitlab-ce!18842

Adjust spec to build correct path when storage path ends in slash

See merge request gitlab-org/gitlab-ce!18843

Update the .gitignore, .gitlab-ci.yml, and Dockerfile templates

See merge request gitlab-org/gitlab-ce!18845

Update the dependencies license list

See merge request gitlab-org/gitlab-ce!18847

Add docs for group runners

Closes #10244

See merge request gitlab-org/gitlab-ce!18807

Updates Clair container scanning GitLab CI configuration

Closes #45819

See merge request gitlab-org/gitlab-ce!18614

Set `runner_type` for cluster/application

See merge request gitlab-org/gitlab-ce!18832

Cleanly handle plural name for ghost user migration

See merge request gitlab-org/gitlab-ce!18798

Add database foreign key between pipelines and builds

Closes #46035

See merge request gitlab-org/gitlab-ce!18822

Raise InvalidRepository error for non-valid git repositories

See merge request gitlab-org/gitlab-ce!18594

Fixed tooltip & spacing of merge request icon in IDE

Closes #46121 and #46123

See merge request gitlab-org/gitlab-ce!18805

Resolve "CE remote_mirrors table should have boolean enabled set to `false`"

Closes #46130

See merge request gitlab-org/gitlab-ce!18801

Don't create import_state until project is persisted

See merge request gitlab-org/gitlab-ce!18803

Prepare 10.8 RC4 release

See merge request gitlab-org/gitlab-ce!18784

Resolve "Add sha1 dependency EE backport"

Closes #46136

See merge request gitlab-org/gitlab-ce!18804

* master: (40 commits)
  Vendor Auto-DevOps.gitlab-ci.yml
  Backport: Keep ShaAttribute from halting startup when we can’t connect to a database
  Replace the `project/builds/artifacts.feature` spinach test with an rspec analog
  Resolve "Monitoring graphs - Popover value improvements"
  Fix close keyboard shortcuts dialog using the keyboard shortcut
  Backport 5480-epic-notifications from EE
  Force creation of new import_state when setting an import state field
  Make deploy keys table more clearly structured
  Resolve "Inform users of up to $500 offer for GCP account"
  Resolve "Clean up bottom status bar Web IDE"
  resolve conflicts with master
  Don't always create a new import_state record from project factory
  Adjust issue boards list header label text color
  Add update guide for 10.8
  Display merge commit SHA in merge widget after merge
  Improved commit message body rendering
  remove unused methods until needed
  add webpack_ prefix to entrypoint paths helper
  Add notice to current fe guide about new fe guide
  Respect permissions when showing Failed Jobs
  ...

Fix failed jobs tab

See merge request gitlab-org/gitlab-ce!18520

Vendor Auto-DevOps.gitlab-ci.yml

See merge request gitlab-org/gitlab-ce!18797

Merge branch '5794-we-should-failover-gracefully-when-we-can-t-connect-to-geo-tracking-database-ce' into 'master'

Backport: Keep ShaAttribute from halting startup when we can’t connect to a database

See merge request gitlab-org/gitlab-ce!18726

Replace the `project/builds/artifacts.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ce!18729

Fix project factory `import_*` traits

Closes gitlab-ee#5904

See merge request gitlab-org/gitlab-ce!18780

Resolve "Display merge commit SHA in merge widget after merge"

Closes #43557

See merge request gitlab-org/gitlab-ce!18722

Resolve "Monitoring graphs - Popover value improvements"

Closes #41783 and gitlab-ee#5573

See merge request gitlab-org/gitlab-ce!18353

Backport 5480-epic-notifications from EE

See merge request gitlab-org/gitlab-ce!18724

Upgrade to Webpack 4

Closes #43400

See merge request gitlab-org/gitlab-ce!17218

Fix close keyboard shortcuts dialog using the keyboard shortcut

See merge request gitlab-org/gitlab-ce!18783