Refactored webpack bundle tag for deploy keys

See merge request gitlab-org/gitlab-ce!17324

Reduce webpack merge conflicts

See merge request gitlab-org/gitlab-ce!17328

Remove issue_show webpack bundle

See merge request gitlab-org/gitlab-ce!17326

move webpack bundles we intend to keep below the list of bundles we're refactoring to reduce conflicts

Backport custom metrics ce components

See merge request gitlab-org/gitlab-ce!17300

Resolve "Domain validation for Pages custom domains" (master branch)

Closes #29497, #42971, and #42083

See merge request gitlab-org/gitlab-ce!17311

Add a button to deploy a runner to a Kubernetes cluster in the settings page

Closes #42044

See merge request gitlab-org/gitlab-ce!17278

Add missing empty line at the end of file

See merge request gitlab-org/gitlab-ce!17303

Convert switch into if statement

See merge request gitlab-org/gitlab-ce!17304

# Conflicts:
#   db/schema.rb

Verify project import status again before marking as failed

Closes #43539

See merge request gitlab-org/gitlab-ce!17319

Resolve "Error message for GKE clusters persists in the next page"

Closes #43496

See merge request gitlab-org/gitlab-ce!17299

Resolve "Milestone Quick Action not displayed with no project milestones but with group milestones"

Closes #42545

See merge request gitlab-org/gitlab-ce!17239

Improve performance of searching for and auto completing of users

See merge request gitlab-org/gitlab-ce!17158

Allow token authentication on go-get request

Closes #42817

See merge request gitlab-org/gitlab-ce!17148

Keep "Import project" tab/form active when validation fails trying to import  "Repo by URL"

Closes #43261

See merge request gitlab-org/gitlab-ce!17136

Port `read_cross_project` ability from EE

See merge request gitlab-org/gitlab-ce!17208

Add Tip about Push to Create project on New Project page

Closes #42938

See merge request gitlab-org/gitlab-ce!17154

Enable "Legacy Authorization" by default when creating a Cluster on GCP

Closes #41619

See merge request gitlab-org/gitlab-ce!17302

Add a button on the project page to set up a Kubernetes cluster and enable  Auto DevOps

Closes #42431

See merge request gitlab-org/gitlab-ce!16900

Remove bundle tag for ui help

Closes #41341

See merge request gitlab-org/gitlab-ce!17301

GKE 1.8 has RBAC on by default, since GKE has bumped the default version
to 1.8.7 RBAC is now on, and we don't support that out of the box.

This was also avoiding cluster applications (tiller, prometheus, etc), to
be installed.

Closes #41619