Document how to manually test Backup/Restore related gitlab-org/gitlab MRs in consideration to the CNG backup-utility
Teams that support building backup/restore components have a good understanding on how to test backup/restore via GDK. But since we maintain the backup-utility script which has some differences in logic to what we do in GDK/Omnibus, we should provide guidance on how to test the backup-utility script.
For more context: &37 (comment 1694708115)
Edited by João Alexandre Cunha