* N+1 queries were fixed for LFS File Locking operations
* Small update for docs

Build was failing with: Mysql2::Error: Cannot drop index 'index_lfs_file_locks_on_project_id_and_path':
needed in a foreign key constraint: DROP INDEX `index_lfs_file_locks_on_project_id_and_path` ON `lfs_file_locks`

More details on https://gitlab.com/gitlab-org/gitlab-ee/-/jobs/49848260

Plus small update for LfsLocksApiController

- Added new compound unique key for lfs_file_locks
- Improved uniqueness validation for creation of locks.
- Added authorization checks for Lock and Unlock services
- Improve description in controler specs

Some migration of code from EE was required given it was not possible to
validate the `Commit` object from CE.

All the endpoints required for Git LFS 2.3.4 have been implemented,
for more info please visit: https://github.com/git-lfs/git-lfs/blob/v2.3.4/docs/api/locking.md

Pagination has not been added given it's optional and Kaminari doesn't
support cursor based pagination yet.

Merge branch 'ee-38265-stuckcijobsworker-wrongly-detects-cancels-stuck-builds-when-per-job-timeout-is-more-than-an-hour' into 'master'

Ee 38265 stuckcijobsworker wrongly detects cancels stuck builds when per job timeout is more than an hour

See merge request gitlab-org/gitlab-ee!4375

Ee 38175 add domain field to auto devops application setting

See merge request gitlab-org/gitlab-ee!4193

Dynamic CI secret variables

Closes gitlab-ce#39118

See merge request gitlab-org/gitlab-ee!4110

Docs: replace product names

See merge request gitlab-org/gitlab-ee!4365

Move BoardList vue component to vue file

See merge request gitlab-org/gitlab-ee!4406

CE upstream - 2018-02-06 18:23 UTC

Closes gitaly#980 et #4180

See merge request gitlab-org/gitlab-ee!4410

Now `Gitlab::Git::Popen#popen` takes an extra parameter, so we had to
adjust our mocks.

Merge branch 'master' into ee-38265-stuckcijobsworker-wrongly-detects-cancels-stuck-builds-when-per-job-timeout-is-more-than-an-hour

Add GitLab Geo Planned Failover doc

Closes #4397

See merge request gitlab-org/gitlab-ee!4392

# Conflicts:
#   app/models/ci/job_artifact.rb
#   app/uploaders/file_uploader.rb

[EE port] 26388 push to create a new project

See merge request gitlab-org/gitlab-ee!4408