support volume revert to any snapshot

Registered by Xiaojun Liao

For some volume backend drivers such as ceph can revert to any snasphot depending on backend drivers, cinder API can cancel the most-recent -snapshot limit, manager will give a error state if reverting-to-non-latest-snapshot is not supported by backend driver.

Blueprint information

Status:
Complete
Approver:
None
Priority:
Undefined
Drafter:
Xiaojun Liao
Direction:
Approved
Assignee:
None
Definition:
Approved
Series goal:
Accepted for pike
Implementation:
Implemented
Milestone target:
None
Started by
Brian Rosmaita
Completed by
Brian Rosmaita

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