QA with runner cloning the repo with a deploy key

Closes gitlab-qa#148

See merge request gitlab-org/gitlab-ce!16859

Allow including custom attributes in API responses

See merge request gitlab-org/gitlab-ce!16526

Add information about projects when searching in wiki_blobs, blobs, commits scopes

Closes #42934

See merge request gitlab-org/gitlab-ce!17095

Display a link to external issue tracker when enabled

Closes #37050

See merge request gitlab-org/gitlab-ce!17030

API: Get refs for a particular commit

Closes #18014

See merge request gitlab-org/gitlab-ce!15026

Add a security harness script

Closes #43220

See merge request gitlab-org/gitlab-ce!17097

Resolve "Diff file navigation shows renamed files as deleted"

Closes #42314

See merge request gitlab-org/gitlab-ce!17091

Update database_mysql.md to remove conflicting recommendation

See merge request gitlab-org/gitlab-ce!17101

Remove unused code in profile.js

See merge request gitlab-org/gitlab-ce!17009

This script toggles a Git pre-push hook that will prevent pushing to
remotes other than dev when the harness is enabled.

Remove problematic LDAP::Person validation for new strategy

Closes #42412 and #42359

See merge request gitlab-org/gitlab-ce!16727

Remove Sentry reporting for query limiting

See merge request gitlab-org/gitlab-ce!17092

Fix settings panels not expanding when fragment hash linked

Closes #43198

See merge request gitlab-org/gitlab-ce!17074

Fully enable nginx-ingress metrics

Closes #43189

See merge request gitlab-org/gitlab-ce!17069

Port spec/fixtures/api/schemas/deployment.json from EE

See merge request gitlab-org/gitlab-ce!17090

See https://gitlab.com/gitlab-org/gitlab-ce/issues/43198

Using Sentry, while useful, poses two problems you have to choose from:

1. All errors are reported separately, making it easy to create issues
   but also making it next to impossible to see other errors (due to the
   sheer volume of threshold errors).

2. Errors can be grouped or merged together, reducing the noise. This
   however also means it's (as far as I can tell) much harder to
   automatically create GitLab issues from Sentry for the offending
   controllers.

Since both solutions are terrible I decided to go with a third option:
not using Sentry for this at all. Instead we'll investigate using
Prometheus alerts and Grafana dashboards for this, which has the added
benefit of being able to more accurately measure the behaviour over
time.

Note that throwing errors in test environments is still enabled, and
whitelisting is still necessary to prevent that from happening (and that
in turn still requires that developers create issues).

Remove allow_n_plus_1 block from Network::Graph

Closes #37436 and gitaly#998

See merge request gitlab-org/gitlab-ce!17087

Remove allow_n_plus_1 block from DeleteMergedBranchesService

Closes #37438 and gitaly#999

See merge request gitlab-org/gitlab-ce!17058

Fixes hover style for lock merge request edit link

Closes #42580

See merge request gitlab-org/gitlab-ce!17065

* upstream/master: (69 commits)
  Change issue show page to group MRs by projects and namespaces
  Merge branch 'master-i18n' into 'master'
  Update sidekiq_style_guide.md
  Document all_queues.yml in sidekiq_style_guide.md
  Fix artifact creation
  Fix Error 500s creating merge requests with external issue tracker
  Addressed mr observations
  Clean new Flash() and stop disabling no-new (eslint) when possible
  Disable query limiting warnings for now on GitLab.com
  Dry up spec
  Add changelog entry
  Schedule PopulateUntrackedUploads if needed
  Fix orphan temp table untracked_files_for_uploads
  Fix last batch size equals max batch size error
  Revert "Merge branch 'rd-40552-gitlab-should-check-if-keys-are-valid-before-saving' into 'master'"
  Fix warning messages for promoting labels and milestones
  Fixed missing js selector for the realtime pipelines commit comp
  Reuse getter Add loading button for better UX
  Honour workhorse provided file name
  Fix a transient failure in db/post_migrate/20170717111152_cleanup_move_system_upload_folder_symlink.rb where symlink already exists
  ...

Signed-off-by: Rémy Coutable <remy@rymai.me>

Document all_queues.yml in sidekiq_style_guide.md

See merge request gitlab-org/gitlab-ce!17079

Constructors shouldn't throw exceptions. We also learned that
different LDAP servers behave a bit unexpectedly sometimes -
returning attributes we didn't ask for, or returned attributes
with language subtypes.

Group MR numbers on issue show page by project and namespace

Closes #26466

See merge request gitlab-org/gitlab-ce!8494

Signed-off-by: Rémy Coutable <remy@rymai.me>

Closes #26466.

Fix artifact creation in CI/CD QA spec

See merge request gitlab-org/gitlab-ce!17078

Port of EE-translations

See merge request gitlab-org/gitlab-ce!17081