Duplicate for RHOSP 16.2
https://review.opendev.org/c/openstack/cinder/+/754785 finally landed upstream.
Dell will backport it all the way to Train if upstream community will allow it.
Hope we can land it in GA so we can use it for re-cert.
+++ This bug was initially created as a clone of Bug #1883326 +++
Fix PowerFlex volume type conversion
Fix bug with PowerFlex storage-assisted volume migration when volume migration was performed without conversion of volume type in cases where it should have been converted to/from thin/thick provisioned.