Currently the MTV Operator uses a hardcoded list of default access mode per storage provisioner for StorageMaps.
This can lead to imported VMs that can't be live migrated because of their RWO PV, even though they're backed by a storage that supports RWX.

Ideally, the MTV Operator should take advantage of the StorageProfile associated with a destination StorageClass to select a default access type for a StorageMap if one isn't specified.