EE version: Clean up the Project model to reduce conflicts

See merge request !2056

Moves remote mirror, import and fork workers to their own queue

See merge request !2177

Add Rubocop Style/DotPosition Cop

See merge request !2201

Fix typo with custom OpenSSH build instructions

See merge request !2202

Namespace license checks for exporting issues (EES)

Closes #2584

See merge request !2164

Fix transient remove issue from board and see milestone removed spec

Closes #2660

See merge request !2139

[ci skip]

Fix Vue warnings in the MR Widget (EE)

See merge request !2192

Fix Vue warnings about string idKey in Related Issues

See merge request !2190

Add instructions for setting up a custom version of OpenSSH for Geo

See merge request !2191

This ensures that Project only includes a single prepend for
EE::Project, which in turn takes care of the rest.

* master: (26 commits)
  Document the manual steps needed to use repmgr
  Update CHANGELOG.md for 9.2.7
  Update CHANGELOG-EE.md for 9.2.7-ee
  Change GitLab version for object storage
  Speed up counting approvers when some are specified
  Fix bad connector - verify if both new and resolved issues are present before adding the connector.
  Re-enable autocomplete for milestones, tags, releases, and wiki
  Clarify that only when using CI_JOB_TOKEN multi-project pipelines exist
  Add link to issue for MySQL/subgroups drop support
  Fix duplicate testing of vm.triggered.
  Fix avatar images in pipeline and approval emails
  Fix some failing specs on master
  Change a few missing `login_as` to `gitlab_sign_in`
  Shush eslint.
  Add specs for coercing triggeredBy into a collection.
  Fix up specs that depend on triggered_by.
  Fix up propsData refs to triggered_by.
  Shush eslint.
  Update expected format for linked_pipelines_mack_data.
  Coerce triggered_by response into collection.
  ...

Conflicts:
	spec/helpers/application_helper_spec.rb

This moves all EE specific code out of the Project model into separate
modules. State machine logic is injected using the
EE::Project::ImportStatusStateMachine module. By moving all this code
out of the Project model we reduce the number of possible merge
conflicts.

Speed up counting approvers when some are specified

See merge request !2196

Change GitLab version for object storage

See merge request !2197

Document the manual steps needed to use repmgr

See merge request !2172

[ci skip]

[ci skip]

[ci skip]

When some approvers are specified, we still need to check the potential set of
approvers, including people with developer access and up. Doing that with an OR
took a long time (over 500ms) on GitLab.com, even when only one approver was
specified.

By doing a UNION instead, we get much faster results (less than 10ms). Also, as
we are using UNION and not UNION ALL, we don't need to exclude the approvers
specified from the query to get everyone with access.

Fix bad connector - verify if both new and resolved issues are present before adding the connector.

Closes #2676

See merge request !2187

[ci skip]

```
[Vue warn]: Invalid prop: type check failed for prop "idKey". Expected
Number, got String.
```

We now fail on Vue warnings,
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/12163/

Re-enable autocomplete for milestones, tags, releases, and wiki --  EE merge edition

Closes gitlab-ce#33598

See merge request !2170

Resolve "Cross-project pipelines are broken"

Closes #2682

See merge request !2166

Fix avatar images in pipeline and approval emails

See merge request !2182

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/33598

Fix some failing specs on master

Closes #2694

See merge request !2180

Add docs for multi-project pipelines graphs

See merge request !2136