EE backport for new application settings update service
A new service class (ApplicationSettings::UpdateService
) was introduced on EE's gitlab-ee!1067. This MR should be sufficient to avoid conflicts.
Also backporting gitlab-ee!1094
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
A new service class (ApplicationSettings::UpdateService
) was introduced on EE's gitlab-ee!1067. This MR should be sufficient to avoid conflicts.
Also backporting gitlab-ee!1094