This change allows the GitLab rails and sidekiq components to receive
tracing spans from upstream services such as Workhorse and pass these
spans on to downstream services including Gitaly and Sidekiq.

This change will also emit traces for incoming and outgoing requests
using the propagated trace information. This will allow operators and
engineers to view traces across the Workhorse, GitLab Rails, Sidekiq and
Gitaly components.

Additional intra-service instrumentation will be added in future
changes.

Avoid overwriting default jaeger values with nil

See merge request gitlab-org/gitlab-ce!24482

Fix runner eternal loop when update job result

Closes #56518

See merge request gitlab-org/gitlab-ce!24481

Collapses directory structure in merge request tree

Closes #53069

See merge request gitlab-org/gitlab-ce!24392

During the review process for adding opentracing factories, a bug was
introduced which caused Jaeger to initialize an invalid tracer. The
bug was due to use sending nil through as a kwarg when the Jaeger
initializer used a non-nil default value.

This is fairly insidious as, the tracer looks like a tracer, but, when
methods are invoked, it throws `NoMethodError` errors. To ensure that
this issue does not happen in future, the tests have been changed to
ensure that the tracer works as expected. This could avoid problems
in future when upgrading to newer versions of Jaeger.

Add spec

Add changelog

Bump rbtrace version to 0.4.11

See merge request gitlab-org/gitlab-ce!24476

Port generic Helm upgrade functionality to CE

See merge request gitlab-org/gitlab-ce!23924

Export default in vuex_shared/modal/actions

See merge request gitlab-org/gitlab-ce!24435

Handle emptyText in user_avatar_list

See merge request gitlab-org/gitlab-ce!24436

- #update_errored? method def is redundant, already defined from state
machine
- #update_in_progress? moved to ApplicationStatus
- #ready_status becomes a constant. Previously it was extended in ee/ so
maybe that was why it's a instance method

Use CI variables in CI docker build examples

See merge request gitlab-org/gitlab-ce!24130

This change renames a dependency and fixes a minor bug, but this upgrade
is happening because Gitaly will be receiving rbtrace as a dependency.

Projects  dropdown is misaligned on issue boards page

Closes #48682 and #54920

See merge request gitlab-org/gitlab-ce!24277

* dropdown position
* add empty state list overflow
* avoid double scrollbars in project dropdown

Add spacer and spacers as overrides

Closes #55256

See merge request gitlab-org/gitlab-ce!24459

Let QA_REMOTE_GRID be nil or empty string

See merge request gitlab-org/gitlab-ce!24468

[Review Apps] Don't exit when dependable job fails

See merge request gitlab-org/gitlab-ce!24469

Markdown footnotes not working

Closes #26375

See merge request gitlab-org/gitlab-ce!24168

Modify file restore to rectify tar issue

See merge request gitlab-org/gitlab-ce!24000

The function that retrieves the dependable job is pretty basic and
retrieves the first job found with the matching name, but this job can
be failed but then successfully retried. In that case, we would exit the
depending job even though the dependable job actually succeeded (the
second time). Let's simplify things, be optimistic and continue with the
depending job even if the dependable job fails.

That reverts to the original behavior.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Cleanup legacy artifact background migration

Closes #46866

See merge request gitlab-org/gitlab-ce!24144

Resolve "Remove expansion hover animation from status icon buttons"

Closes #42769

See merge request gitlab-org/gitlab-ce!24268

Since the rendering of footnotes is changed, the cached
html need to be updated

Refactor "Allow edits from maintainers in forks" docs

See merge request gitlab-org/gitlab-ce!24426

Fixed typo in run_pipeline! function
  -> Open3.pieline to Open3.pipeline

Adjusted run_pipeline! function
  to match rubocop syntax requirements
Adjusted run_pipeline! function
  to use variable instead of string interpolation

Changed run_pipeline! function to have use $ in regex
Changed run_pipeline! function to use Open3.pipeline
instead of Open3.pipeline_start

and additional spec

Improve MilestonesFinder to accept project and group relations

Closes #47988

See merge request gitlab-org/gitlab-ce!24325

Show CI artifacts size with 3 significant digits

Closes #56363

See merge request gitlab-org/gitlab-ce!24387

Change width of .dropdown-menu-toggle to 160px

See merge request gitlab-org/gitlab-ce!24391

Backport github import fix from EE

See merge request gitlab-org/gitlab-ce!24462

Update issue template with user journey, persona label additions, and clarification between success metrics and acceptance criteria

See merge request gitlab-org/gitlab-ce!24428

Update issue template with user journey, persona label additions, and clarification between success metrics and acceptance criteria