So that we could use it for the schedule before
trying to use CreatePipelineService

cannot create the tag if it's a tag, and
cannot merge the branch if it's a branch.

The following was happening:

1. Workhorse stores an LFS file in /var/opt/gitlab/gitlab-rails/shared/lfs-objects
2. CarrierWave then renames the file to a temporary directory (e.g. /opt/gitlab/embedded/service/gitlab-rails/tmp)
3. CarrierWave then renames the file to its final location (e.g. /var/opt/gitlab/gitlab-rails/shared/lfs-objects)

When the LFS upload path was on a different filesystem than the Rails
installation, step 2 could take a longer than 10 seconds, at which point Workhorse
would time out with "badgateway: failed after 10s: context canceled".

This change makes the work path in the same root as the LFS storage path, preventing moves
across filesystems.

Closes #33218

This is controlled with the feature flag gitlab_git_diff_size_limit_increase.
Both of these limits were basically picked arbitrarily in the first place;
disabling the feature flag reverts to the old limits.

This commit lets a user bypass the automatic signin on the login form,
in order to login with a technical (admin, etc) account

Closes #3786
Signed-off-by: NRémy Coutable <remy@rymai.me>

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

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

Various Rails initializers (metrics, sentry, etc) are run before migrations,
which can lead to a mismatch between app/models/application_settings.rb and
schema.

Also add minor changed needed to pass review

Removed unneeded newline in issuables_helper_spec and removed unneeded updated_at_by variable in issuable_app_data

So we don't have to do it in CreateDeploymentService
Feedback:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11695#note_31322649

User-facing changes (fast & easy win)

it a bit more robust against missing options,
which we did guard on for some cases.

When a new deployment is created, this will trigger the invalidation on
the etag cache on the environment. This flow is now explicitly tested.