Accept error code 204 (no content) if no jobs in queue
See https://github.com/gitlabhq/gitlabhq/pull/9671 for the corresponding GitLab PR and https://github.com/gitlabhq/gitlab-ci/issues/363 for discussion.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
See https://github.com/gitlabhq/gitlabhq/pull/9671 for the corresponding GitLab PR and https://github.com/gitlabhq/gitlab-ci/issues/363 for discussion.