Change feature flag to shared_runner_minutes_on_subnamespace and update code to verify if shared_runner_minutes can be used

Geo: Ensure that LFS object deletions are communicated to the secondary

Closes #3962

See merge request gitlab-org/gitlab-ee!3481

Add geo hashed storage warning

See merge request gitlab-org/gitlab-ee!3480

Port of 38869-milestone to EE

See merge request gitlab-org/gitlab-ee!3484

Improve geo docs based on Sid demo

See merge request gitlab-org/gitlab-ee!3485

Disable file attachments for epics

Closes #3914

See merge request gitlab-org/gitlab-ee!3434

Remove upgraded licensed feature from list

See merge request gitlab-org/gitlab-ee!3477

[EE] Update gRPC to v1.7.2

See merge request gitlab-org/gitlab-ee!3443

Geo - Move the primary node checkbox below the URL

See merge request gitlab-org/gitlab-ee!3483

EE: Fix merge_requests.source_project_id migration

See merge request gitlab-org/gitlab-ee!3476

Cap the Geo retry_at value to prevent out of range timestamps

See merge request gitlab-org/gitlab-ee!3461

Make Issue Boards sidebar subscriptions async -- EE merge edition

See merge request gitlab-org/gitlab-ee!3442

Show the current EE plan in the license details section

See merge request gitlab-org/gitlab-ee!3462

We need to make sure merge_requests.source_project_id allows NULL values
_before_ updating rows as otherwise this will lead to a NOT NULL
constraint failing.

Implement a workaround for QA mattermost failures / EE

See merge request gitlab-org/gitlab-ee!3471

Make change_access_spec.rb less likely to cause conflicts on CE to EE merges

See merge request gitlab-org/gitlab-ee!3456

Enable RequestStore in IssuesController spec to prevent N+1 warnings

See merge request gitlab-org/gitlab-ee!3356

Add Docker binaries to instance image of GitLab QA / EE

See merge request gitlab-org/gitlab-ee!3473

[ci skip]

This solves a problem where Gitaly connections through Unix sockets
would not work when a proxy was configures, even if a no_proxy setting
was specified

EE port of 38451 fe sprite icons vue component

See merge request gitlab-org/gitlab-ee!3433

Conflicts:
	app/assets/javascripts/boards/components/board_card.vue
	app/assets/javascripts/boards/models/issue.js
	app/assets/javascripts/subscription.js