Starting with Git 2.11:

 * In order for the receiving end of "git push" to inspect the
   received history and decide to reject the push, the objects sent
   from the sending end need to be made available to the hook and
   the mechanism for the connectivity check, and this was done
   traditionally by storing the objects in the receiving repository
   and letting "git gc" expire them.  Instead, store the newly
   received objects in a temporary area, and make them available by
   reusing the alternate object store mechanism to them only while we
   decide if we accept the check, and once we decide, either migrate
   them to the repository or purge them immediately.

This means that some special environment variables
(`GIT_OBJECT_DIRECTORY`, and `GIT_ALTERNATE_OBJECT_DIRECTORIES`) need to be
set (or passed to `Rugged::Repository.new` in the `alternates` keyword
argument) in order for the new-and-no-yet-accepted objects to be
seen by the various Git commands (e.g. `rev-list` or
`Gitlab::Git::Commit#find`).
Signed-off-by: Rémy Coutable <remy@rymai.me>

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

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

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

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

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

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

Fix the new elasticsearch sidekiq queue names

See merge request !1600

Geo - Add support for remaining file replication

See merge request !1562

Protected Tags EE MR

See merge request !1572

Allow admins and auditors to perform global searches with Elasticsearch

Closes #1646

See merge request !1578

Feature/service desk be

See merge request !1508

# Conflicts:
#   spec/lib/gitlab/import_export/all_models.yml

Service desk integration

See merge request !1519

Give each elasticsearch worker its own sidekiq queue

Closes #2108

See merge request !1598

CE upstream: Thursday

Closes gitaly#167 and gitaly#177

See merge request !1583

Multi-level container registry images port to EE

See merge request !1594

Noticed there wasn't any tooltip on the clipboard button so I moved to
using `data-clipboard-text` which gets handled by `copy_to_clipboard.js`

 - Prerender data-* attributes for endpoint, enabled, incoming_email to
   hydrate Vue component
 - Use actual /group/project/service_desk endpoint GET/PUT

Address @filipa review

 - Accessible icons
 - nits

@hazelyang metrics,
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1519#note_26863100

See merge request gitlab-ce!10109

Conflicts:
	app/services/projects/destroy_service.rb
	spec/lib/gitlab/import_export/all_models.yml