Add backup storage location to velero backup

This is a follow up from https://gitlab.cern.ch/paas-tools/okd4-install/-/merge_requests/982#note_6062071 From Velero 1.8, the default backupStorageLocation will need to configured from the client side

requested review from @fborgesa

added 3 commits

• 8c82da60...d4009015 - 2 commits from branch master
• 7b4e4b20 - Add backup storage location to velero backup

Compare with previous version

requested review from @crdeoliv

approved this merge request

merged

mentioned in commit 8ac361d6