Raw diffs are served from Gitaly

Closes gitaly#222

See merge request gitlab-org/gitlab-ce!20091

Unify spec/features/admin/admin_groups_spec.rb

See merge request gitlab-org/gitlab-ce!20107

Fix boards issue highlight

Closes #48068

See merge request gitlab-org/gitlab-ce!20063

CE-EE parity for lib/gitlab/git/gitlab_projects.rb

See merge request gitlab-org/gitlab-ce!20047

[Rails5] Fix "'-1' is not a valid data_store"

See merge request gitlab-org/gitlab-ce!19917

Update lfs_administration.md with language edits

See merge request gitlab-org/gitlab-ce!19950

Add troubleshooting guide for lfs uploading timeouts

See merge request gitlab-org/gitlab-ce!19949

FindRefName RPC now mandatory

Closes gitaly#221

See merge request gitlab-org/gitlab-ce!20090

Docs: add inline badges to Auto DevOps features list

See merge request gitlab-org/gitlab-ce!20096

Disallow methods that copy data on large tables

See merge request gitlab-org/gitlab-ce!20021

Fix ruby sampler metrics

See merge request gitlab-org/gitlab-ce!20039

Repository size is Gitaly only

Closes gitaly#393

See merge request gitlab-org/gitlab-ce!20089

* Use a simple counter for sampler duration instead of a histogram.
* Use a counter to collect GC time.
* Remove unused objects metric.
* Cleanup metric names to match Prometheus conventions.
* Prefix generic GC stats with `gc_stat`.
* Include worker label on memory and file descriptor metrics.

Unify spec/features/issues/filtered_search/filter_issues_spec.rb

See merge request gitlab-org/gitlab-ce!20070

Closes https://gitlab.com/gitlab-org/gitaly/issues/222

Add docs for RequestCache

Closes #48094

See merge request gitlab-org/gitlab-ce!20064

These are all over 20 GB on GitLab.com. merge_request_diff_commits is several
hundred gigabytes in size.

Update squash_and_merge.md to fix link and description

See merge request gitlab-org/gitlab-ce!20093

(cherry picked from commit b5ea33397eb8d2c874662026b0e36aed7c41dbbc)

Add ip_address to json examples in Runner API docs

Closes #47973

See merge request gitlab-org/gitlab-ce!20092

Closes https://gitlab.com/gitlab-org/gitaly/issues/393

Git ls files is Gitaly only now

Closes #47893 and gitaly#327

See merge request gitlab-org/gitlab-ce!20088

Has never been in OPT_OUT, dispite being ages old. The time where
feature flags are still set by env vars.

Closes https://gitlab.com/gitlab-org/gitaly/issues/221

Moved to the front on the line through: https://gitlab.com/gitlab-org/gitlab-ce/issues/47893

Closes: https://gitlab.com/gitlab-org/gitlab-ce/issues/47893
Closes: https://gitlab.com/gitlab-org/gitaly/issues/327

Unify spec/support/redis/redis_shared_examples.rb

See merge request gitlab-org/gitlab-ce!20074

Document end to end flow for Kubernetes and Auto DevOps

Closes #44455

See merge request gitlab-org/gitlab-ce!19699

[Rails5] Force the `protect_from_forgery` callback run first

Closes #48204

See merge request gitlab-org/gitlab-ce!20055

Unify object_storage_spec.rb with EE

See merge request gitlab-org/gitlab-ce!20069

Unify spec/services/auth/container_registry_authentication_service_spec.rb

See merge request gitlab-org/gitlab-ce!20071

Use expect_next_instance_of to replace expect_any_instance_of

See merge request gitlab-org/gitlab-ce!20072

Show a reCAPTCHA on signin page if custom header is set

Closes #48184

See merge request gitlab-org/gitlab-ce!20076

This will only be displayed if `X-GitLab-Show-Login-Captcha` is set as an HTTP
header.

Retroactively add changelogs

See merge request gitlab-org/gitlab-ce!20079