Update Praefect config
The config format changed to accomodate multiple virtual storage
See https://gitlab.com/gitlab-org/gitaly/merge_requests/1606
Edited by George Koltsov
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
The config format changed to accomodate multiple virtual storage
See https://gitlab.com/gitlab-org/gitaly/merge_requests/1606