Merge branch 'track-pipeline-user' into 'master'

Track a user who creates a Pipeline

## What does this MR do?
This adds additional column to pipelines to track user who is creating pipelines.

## Why was this MR needed?
This is to make it possible to show all pipelines created by specific user and to later solve: https://gitlab.com/gitlab-org/gitlab-ce/issues/18054

## What are the relevant issue numbers?
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/18992

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5272

1 files changed, 1 insertions, 0 deletions

diff --git a/CHANGELOG b/CHANGELOG
index 16899f775fb..1de7d99f708 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -56,6 +56,7 @@ v 8.10.0 (unreleased)
   - Fix user creation with stronger minimum password requirements !4054 (nathan-pmt)
   - Only show New Snippet button to users that can create snippets.
   - PipelinesFinder uses git cache data
+  - Track a user who created a pipeline
   - Actually render old and new sections of parallel diff next to each other
   - Throttle the update of `project.pushes_since_gc` to 1 minute.
   - Allow expanding and collapsing files in diff view (!4990)