Backport of CE changes from https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/7844

See merge request gitlab-org/gitlab-ce!22221

Clarify what happens when enabling a service template

See merge request gitlab-org/gitlab-ce!22240

Update the HA NFS docs

See merge request gitlab-org/gitlab-ce!22239

Move the Auto DevOps note to the top

See merge request gitlab-org/gitlab-ce!21745

Add test of adding file templates via Web IDE and Files view

See merge request gitlab-org/gitlab-ce!21914

Inline RSpec/FilePath rubocop rule

See merge request gitlab-org/gitlab-ce!22233

Clarify SLA for defects

See merge request gitlab-org/gitlab-ce!22229

Remove duplicated item in Administration Documentation

See merge request gitlab-org/gitlab-ce!21933

Moves RSpec/FilePath cop from gitlab-styles, so we can specify
filepaths to ignore without hardcoding them in the gem.

Update wiki empty state

See merge request gitlab-org/gitlab-ce!22218

Reorganize menu files

Closes gitlab-org/quality/team-tasks#60

See merge request gitlab-org/gitlab-ce!22115

Resolve "Link for RBAC (experimental support) is going to the wrong anchor"

See merge request gitlab-org/gitlab-ce!22216

Remove unencrypted webhook token and URL columns

Closes #52367

See merge request gitlab-org/gitlab-ce!22199

Resolve "pipeline's page shows vue error on master"

Closes #52372

See merge request gitlab-org/gitlab-ce!22201

Remove a duplicated word in the README file

See merge request gitlab-org/gitlab-ce!22200

Resolve "Harmonize prettier and eslint configs"

Closes #52233

See merge request gitlab-org/gitlab-ce!22126

Improve downstream pipeline trigger class

See merge request gitlab-org/gitlab-ce!22110

Adds tests that adds new files via file templates via the Files view
and the Web IDE.

Includes changes to page objects and associated code

Fetches template content from the API rather than hardcoding strings
that will need to be updated if the templates change. Some of the
content is stored as flat files but we can't use them because they're
not included in the docker images gitlab-qa uses.

Assert prod environment is live after Auto Devops

See merge request gitlab-org/gitlab-ce!22131

doc-Resolve "Add Troubleshooting to Github Import"

Closes #43953

See merge request gitlab-org/gitlab-ce!17583

Improve the Repository files documentation

See merge request gitlab-org/gitlab-ce!22225

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

QA: Use basic auth to create cluster role binding

See merge request gitlab-org/gitlab-ce!22190

Documentation for feature flags defaulting to on

Closes gitlab-ee#7883

See merge request gitlab-org/gitlab-ce!22157

Add missed files

Use correct method

Implement review feedback

Add missing frozen_string_literal

Squash 5 commits

docs/Tsumitsu Fix render issue in GFM documentation page

See merge request gitlab-org/gitlab-ce!21997