Add simple disaster recovery guide for non-PVC based clusters

[LalitMaganti]

Is this a bug report or feature request?

• Feature Request

What should the feature do:
A simpler disaster recovery guide should be created similar to the the simple PVC-based cluster guide implemented in #6452

This was suggested in #6452 (comment)

What is use case behind this feature:
The current guide for disaster recovery on non-PVC clusters is complex and relies on manually editing of both internals of Ceph and Rook. It would be good if we could have a simple guide similar to the one for PVC-based clusters (implemented at #6452).

Environment:

N/A

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in a week if no further activity occurs. Thank you for your contributions.

[bh-tt]

Can confirm, the guide seemed so complex and with so many steps I'd prefer to just take a backup and restore all the data manually.