Related issues FE -- Step 6: Add RelatedIssuesRoot
See https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1797
- Adds basic
RelatedIssuesRoot
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
See https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1797
RelatedIssuesRoot