Backport "Move /projects/fork/:id to /projects/:id/fork"
Backports gitlab-ce!8940 moving /projects/fork/:id to /projects/:id/fork on V4 API.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Backports gitlab-ce!8940 moving /projects/fork/:id to /projects/:id/fork on V4 API.