Add VolumeSnapShot support

[Chauncey Thorn]

Issue

Update database PVC to support using a volumesnapshot as the source of the PVC being requested.

Analysis

Fields needed

• snapshotsource is the volume to take a snapshot of when creating workload
• snapshot true indicate if we should switch to CSI storageclass for PVC

Confirmation

1. When snapshot is enabled for the workload being created a PVC is created from an VolumeSnapshot
2. The VolumeSnapshot should be managed by the operator