Disable replication lag check for Aurora PostgreSQL databases

Closes #52176

See merge request gitlab-org/gitlab-ce!22786

Update project and group labels empty state

See merge request gitlab-org/gitlab-ce!22745

Add 'only history' option to notes filter

Closes #51323

See merge request gitlab-org/gitlab-ce!22544

Bump Gitaly to 0.128.0

See merge request gitlab-org/gitlab-ce!22802

Add the Play button for delayed jobs in environment page

Closes #52129

See merge request gitlab-org/gitlab-ce!22106

QA Selectors for Batch Comment E2E Automation

See merge request gitlab-org/gitlab-ce!22681

Improve performance of tree rendering in repositories with a lot of items

See merge request gitlab-org/gitlab-ce!16511

To make sure GitLab will have the latest Gitaly, the version number has
to be bumped here.

Add access controlled pages entry to permissions table

See merge request gitlab-org/gitlab-ce!22798

Create users via the API

See merge request gitlab-org/gitlab-ce!22779

Bump KUBERNETES_VERSION to latest 1.10 series

Closes #53450

See merge request gitlab-org/gitlab-ce!22757

Enable frozen string for lib/gitlab/ci/**/*.rb

See merge request gitlab-org/gitlab-ce!22703

Uses gitlab-ui components in jobs components.

See merge request gitlab-org/gitlab-ce!22780

Align toggle sidebar button across all browsers and OSs

See merge request gitlab-org/gitlab-ce!22771

[ci skip]

docs - Update definition of done with e2e tests requirement

Closes gitlab-org/quality/team-tasks#67

See merge request gitlab-org/gitlab-ce!22655

Update license_management job

See merge request gitlab-org/gitlab-ce!22732

Update mysql.md with correct anchor link to "how services are linked"

See merge request gitlab-org/gitlab-ce!22739

Merge branch '53467-transient-failure-in-spec-controllers-groups-boards_controller_spec-rb' into 'master'

Resolve "Transient failure in spec/controllers/groups/boards_controller_spec.rb"

Closes #53467

See merge request gitlab-org/gitlab-ce!22785

Optimize merge request refresh by using the database to check commit SHAs

See merge request gitlab-org/gitlab-ce!22731

Replication slots are not supported in Aurora. Attempting to check
the lag results in the message:

```
ActiveRecord::StatementInvalid: PG::FeatureNotSupported: ERROR:
Replication slots are currently not supported in Aurora : SELECT
pg_xlog_location_diff(pg_current_xlog_insert_location(),
restart_lsn)::...
```

To avoid breaking support for background migrations in Aurora, we just
disable the check if we encounter this error.

This change also now checks whether there are any replication slots
present in the primary before checking the replication lag.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/52176

This allows us to use a kubectl binary that should be able to
connect to Kubernetes clusters v1.9 and up.

Use our own docker image for helm install pods

See merge request gitlab-org/gitlab-ce!22778

Previously for a given merge request, we would:

1. Create the array of commit SHAs involved in the push (A)
2. Request all merge request commits and map the SHA (B)
3. Reload the diff if there were any common commits between A and B

We can avoid additional database querying and overhead by
checking with the database whether the merge request contains any
of the commit SHAs.

Relates to https://gitlab.com/gitlab-org/gitlab-ce/issues/53213

Allows users to be fetched/created via the API.

This will reduce dependencies and failure points during installation. It
will also reduce security risks from untrusted dependencies being able
to effect all our users

Removes old buttons,links and tooltips and uses
the new gitlab-ui components.

Add email for milestone change

Closes #51520

See merge request gitlab-org/gitlab-ce!22279

Incorporates Kubernetes Namespace into Cluster's flow

See merge request gitlab-org/gitlab-ce!22011