Encryption Test Scenario for clone volume

Due to an error in the _setup_encryption_keys volume rekey code, a
cloned encrypted volume that has been rekeyed will specify an
encryption key different from the key used to format the volume,
so it cannot be attached.

This test scenario will cover this feature and also the case of
source-vol feature.

Related-Bug: #1904440
Depends-on: https://review.opendev.org/#/c/762884/
Change-Id: I846b96ef925c34162cf462da91d854ceacabe022
1 file changed