Update GitLab Pages to v1.6.0

See merge request gitlab-org/gitlab-ce!29048

Resolve: Milestones leaked via search API

See merge request gitlab/gitlab-ee!865

Persistent XSS in note objects EE

See merge request gitlab/gitlab-ee!898

Fix url redaction for issue links

See merge request gitlab/gitlab-ee!911

Disallow invalid MR branch name

See merge request gitlab/gitlab-ee!919

Hide issue title on unsubscribe for anonymous users

See merge request gitlab/gitlab-ee!920

Fix confidential issue label disclosure on milestone view

See merge request gitlab/gitlab-ee!924

Prevent password sign in restriction bypass

See merge request gitlab/gitlab-ee!940

Fix XSS in Ancestor tooltip title

See merge request gitlab/gitlab-ee!945

Protect Gitlab::HTTP against DNS rebinding attack

See merge request gitlab/gitlab-ee!964

Prevent password sign in restriction bypass

See merge request gitlab/gitlabhq!2702

Resolve: Milestones leaked via search API

Closes #2822

See merge request gitlab/gitlabhq!2997

Disallow invalid MR branch name

See merge request gitlab/gitlabhq!3052

Handling password on import by url page

See merge request gitlab/gitlabhq!3061

Protect Gitlab::HTTP against DNS rebinding attack

See merge request gitlab/gitlabhq!3071

Fix url redaction for issue links

See merge request gitlab/gitlabhq!3091

Hide issue title on unsubscribe for anonymous users

See merge request gitlab/gitlabhq!3097

Fix confidential issue label disclosure on milestone view

See merge request gitlab/gitlabhq!3098

Add Namespace and ProjectStatistics to GraphQL API

See merge request gitlab-org/gitlab-ce!28277

added `dropdown-extended-height` class to labels dropdown-menu

See merge request gitlab-org/gitlab-ce!28659

Refactor and abstract Auto Merge Processes

See merge request gitlab-org/gitlab-ce!28595

EE Port: Abstract auto merge processes

See merge request gitlab-org/gitlab-ee!13276

Add dependency_list report fixture

See merge request gitlab-org/gitlab-ce!29025

Fix port validations in .gitlab-webide.yml

See merge request gitlab-org/gitlab-ce!29016

Fix port validation in .gitlab-webide.yml

Closes #11886

See merge request gitlab-org/gitlab-ee!13846

Fix an epics+nested groups spec on mysql

Closes #11904

See merge request gitlab-org/gitlab-ee!13896

[CE] Run review-qa-all in parallel

See merge request gitlab-org/gitlab-ce!28283

Add knapsack qa report and use it to run tests in parallel

Use the RSpec runner with knapsack

The way the Knapsack runner uses exec to start rspec seems
incompatible with the way we expect it to work. Plus, it requires
specifying KNAPSACK_TEST_DIR.

Instead, we use knapsacks AllocatorBuilder to select the spec
files to run, and then start rspec as normal, via
RSpec::Core::Runner.run

This also means we can incorporate tags.

Let the job run automatically

Include KNAPSACK_TEST_FILE_PATTERN in vars

Check all defined knapsack env vars before requiring knapsack

Fix migration failure when groups are missing route

Closes #58714

See merge request gitlab-org/gitlab-ce!29022

Resolve "Remove unused `users.support_bot`"

Closes #11130

See merge request gitlab-org/gitlab-ee!12620