We need to support disk type for vSphere

We need to support disk type for vSphere, such as persistent, and independent

For vSphere, we have disk persistent, and independent mode. Typically we want persistent for root and application disks, but we independent disk for large data disk, or log disk.
The mode is very important for vSphere snapshot. Only persistent disks are included in snapshot by design. If we have TB disk of log or data, we should not include them into snapshot.

Example/Use case(s):
(Replace with mock workflow/example/diagram when applicable)