Gitaly stream interruption tests
Closes https://gitlab.com/gitlab-org/gitlab-workhorse/issues/128
These tests should have been in https://gitlab.com/gitlab-org/gitlab-workhorse/merge_requests/158 already.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Closes https://gitlab.com/gitlab-org/gitlab-workhorse/issues/128
These tests should have been in https://gitlab.com/gitlab-org/gitlab-workhorse/merge_requests/158 already.