Check if OLD is set when migrating issue assignees
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/32439, which we ran into when deploying the latest 9.2 RC.
cc @vsizov
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/32439, which we ran into when deploying the latest 9.2 RC.
cc @vsizov