Description of problem:

Second attempt of sending the deletion request of an expired backup fails because the tarball was already deleted in the first attempt.

Version-Release number of selected component (if applicable):

• OADP 1.4.7
• ARO 4.16.30

How reproducible:

All the time in customer cluster

Steps to Reproduce:
1. Azure blob storage in use.
2. Have backups configured with a ttl
3. garbageCollector request a deletion through deletion_controller

Actual results:

First attempt works and deletes cloud resources from storage, but backup CR is still in the cluster after 1 hour where the second attempt of the deletion request happens and fails because cannot download the tarball deleted in the first attempt. 

Expected results:

Backup CR should be deleted in the first deletion request if all cloud storage were deleted and avoid having another attempt 

Additional info: