* master: (365 commits)
  Update CHANGELOG.md for 9.1.2
  Update CHANGELOG-EE.md for 9.1.2-ee
  Update CHANGELOG.md for 9.1.2
  Update CHANGELOG-EE.md for 9.1.2-ee
  Update CHANGELOG.md for 9.1.2
  Update CHANGELOG-EE.md for 9.1.2-ee
  Update CHANGELOG.md for 9.1.2
  Update CHANGELOG-EE.md for 9.1.2-ee
  Disable AddColumnWithDefaultToLargeTable cop for pre-existing migrations
  Add AddColumnWithDefaultToLargeTable cop
  Rename AddColumnWithDefault to ReversibleAddColumnWithDefault
  Refactor the AddColumnWithDefault cop to use node matchers
  Change from .click -> .trigger('click') to make spec pass
  Enable RSpec/FilePath cop
  Address review comments for Geo spec
  Fix bug where Geo secondary Sidekiq cron jobs would not be activated if settings changed
  Remove warning about protecting Service Desk email from form
  Use new renamed markup method
  Fix commit search on some elasticsearch indexes
  Document the process of docs only changes
  ...

Enable RSpec/FilePath cop

See merge request !1724

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Remove warning about protecting Service Desk email from form

Closes #2244

See merge request !1755

[EE] Add cop to blacklist specific tables for `add_column_with_default`

See merge request !1759

We're going to add another cop that deals with another aspect of
`add_column_with_default`, so we need to separate them.

Fix bug where Geo secondary Sidekiq cron jobs would not be activated if settings changed

Closes #2289

See merge request !1754

Change from .click -> .trigger('click') to make spec pass

See merge request !1760

- Ignore JS fixtures
- Ignore qa directory
- Rewrite concern specs to put concern name first

CE upstream: Thursday

Closes #2246

See merge request !1749

If a secondary starts up before it has been made a secondary, the Sidekiq initializer
would disable the backfill and file transfer cron jobs. This state persists indefinitely
until either the entire Redis database is flushed or the jobs are manually activated.
To fix this, we activate the jobs at startup if Geo is being used.

Closes #2289

Make the elasticsearch service use less RAM

See merge request !1747

Add global wiki search using Elasticsearch

Closes #1565

See merge request !1717

This is already in the docs.

Skip irrelevant jobs for documentation only changes

See merge request !1742

Fix commit search on some elasticsearch indexes

Closes #2280

See merge request !1745

Port of 2246-uuid-is-nil-for-new-installation to EE

See merge request !1733

Fix MR approvals sentence

Closes #2272

See merge request !1730

# Conflicts:
#   db/schema.rb

Fix creating issues by email with Service Desk on

Closes gitlab-ce#31434

See merge request !1743

Port of environments-vue-5 to EE

See merge request !1722