Fix migrate! method (Minimal fix with ExclusiveLock to prevent race conditions)

Closes #4928 and #4980

See merge request gitlab-org/gitlab-ee!4624

Resolve "Background upload option is not effective"

Closes #4915

See merge request gitlab-org/gitlab-ee!4507

Resolve ""Support private HTTPS urls for object storage""

Closes #4879

See merge request gitlab-org/gitlab-ee!4475

This reverts commit 54a575f1, reversing
changes made to c63af942.

EE: Trace as artifacts (FileStorage and ObjectStorage)

Closes #4171

See merge request gitlab-org/gitlab-ee!4258

Support SendURL for performing indirect download of artifacts if clients does…

See merge request gitlab-org/gitlab-ee!4401

Move uploads to object storage

Closes #4163

See merge request gitlab-org/gitlab-ee!3867

Transfer job archives after creation

See merge request gitlab-org/gitlab-ee!3646

Multiple artifacts ee

See merge request gitlab-org/gitlab-ee!3276

ObjectStoreUploader#migrate! uses with_callbacks to trigger verify_license!

Closes #3370

See merge request !2863

Switch out resolver to mitigate SocketError

See merge request !2809

Use proper logging for artifacts rake task

See merge request !2762

Can migrate LFS objects to S3 style object storage

Closes #2841

See merge request !2760

Object store for artifacts

Closes gitlab-ce#29203

See merge request !1762

Resolve "Merge requests and issues don't show for all subgroups"

Closes #43510

See merge request gitlab-org/gitlab-ce!17312

Previously, these wouldn't count issues or MRs in subgroups - meaning that if
_this_ group had no issues or MRs, we'd show the empty state, which was wrong.

Expose ChatName objects to slash commands

See merge request gitlab-org/gitlab-ce!17295

Remove commit_pipelines webpack entry point

See merge request gitlab-org/gitlab-ce!17379

Resolve "Verified commits not displaying properly"

Closes #43315

See merge request gitlab-org/gitlab-ce!17323

Resolve "Improve Variables validation message"

Closes #43275

See merge request gitlab-org/gitlab-ce!17135

Disable RBAC on Prometheus values.yml

Closes #43621

See merge request gitlab-org/gitlab-ce!17372

Remove environments folder webpack entry point

See merge request gitlab-org/gitlab-ce!17380

CONTRIBUTING.md: Use a proper example for the stewardship label

Closes #43579

See merge request gitlab-org/gitlab-ce!17347