Add upgrade subcommand & other minor improvements to drbd setup script

[malayparida2000]

The DRBD upgrade flow looks like this:

1. Validate output ConfigMap presence and load DRBD disk by-id mapping
2. Add do not reconcile flag to the floating Ceph mon Deployment
3. Scale floating Ceph mon down to 0 replicas
4. Remove autostart DaemonSet
5. Demote and down the DRBD resource on both nodes
6. Delete the KMM Module and Dockerfile ConfigMap
7. Recreate KMM Module and Dockerfile ConfigMap
8. Wait for new kmods and validate version
9. Drbdadm up the DRBD resource on both nodes
10. Create the DRBD auto-start DaemonSet
11. Remove do not reconcile flag from the floating Ceph mon Deployment
12. Scale the floating Ceph mon back up to 1 replica
13. Create the success ConfigMap

Assisted by AI.

Ref-https://redhat.atlassian.net/browse/RHSTOR-8825

[openshift-ci]

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