Add merge request discrepancy resolutions to documentation

See merge request !1532

Rename Rake task from geo:add_primary_node to geo:set_primary_node

See merge request !1579

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Read track from deployment and visualise canary deployments

See merge request !1551

Burndown Charts

Closes #91

See merge request !1540

Add check for deploy boards

See merge request !1555

Fix elasticsearch docs: ID=1 sudo ... is ineffective

See merge request !1573

Add a Rake task to make the current node the primary Geo node

See merge request !1533

Build issues for merge request when there is an issue template

Closes #1968

See merge request !1550

Return 404 instead of a 500 error on API status endpoint if Geo tracking DB is not enabled

See merge request !1571

Strip trailing forward slashes from elasticsearch URLs

Closes #2039

See merge request !1566

Ee fix groups long url

See merge request !1568

Fix intermittent spec failure in spec/lib/gitlab/mirror_spec.rb

Closes #2081

See merge request !1570

If you attempt to run this spec between 00:00 and 01:00, one of
the examples fails because:

DateTime.now.beginning_of_hour == DateTime.now.at_beginning_of_day

Closes #2081
Signed-off-by: Rémy Coutable <remy@rymai.me>

Resolve "Elasticsearch: Highlighting in the code results does not work"

Closes #1567

See merge request !1564

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If the tracking database is not configured, the secondary attempts to read from
the Geo DB but fails spectacularly because the tables don't exist.

To support #1664, we need a way to add a Geo Node to the database with an input SSH key.

Fixes transient failure: waits for asyncronous update

Closes #2079

See merge request !1567

* master: (95 commits)
  Port 'Refactor test_utils bundle' to EE
  Port of 28732-expandable-folders to EE
  Allow to edit build minutes per user ee
  Resolve merge conflicts
  Backport differences in global search from EE to CE
  Fix elasticsearch global code search following https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9655
  Fix sticking of the database load balancer
  Remove useless queries with false conditions (e.g 1=0)
  Don't autofill kubernetes namespace
  Split status and confidentiality action
  Update patch_versions.md, add `yarn:install` in `Clean up assets and cache` command.
  Fix conflcit in repository spec
  Ensure we generate unique usernames otherwise validations fail
  Fix a Knapsack issue that would load support/capybara.rb before support/env.rb
  Ensure users have a short username otherwise a click event is triggered outside the search field
  Remove index for users.current sign in at
  Port of fix-github-importer-slowness to EE
  Enable the `bullet_logger` setting; enable `raise` in test environment
  Fix Rubocop offenses
  Set the right timeout for Gitlab::Shell#fetch_remote
  ...

Port 'Refactor test_utils bundle' to EE

See merge request !1563