Description of problem:

.spec.features.dataMover.pruneInterval

• Defines how often to prune the snapshots from the restic repository
• related to https://issues.redhat.com/browse/OADP-1151

• apiVersion: oadp.openshift.io/v1alpha1
  kind: DataProtectionApplication
  metadata:
    name: velero-sample
  spec:
    configuration:
      velero:
        itemOperationSyncFrequency: "10s"      defaultPlugins:
        - openshift
        - aws
        - csi
        - vsm
    features:
      dataMover:
        enable: true      credentialName: dm-repo-password
        pruneInterval: "14" <<<<<<<-------------------- pruneInterval

.spec.features.dataMover.volumeOptions

• Allow custom accessModes, storageClassName used by Data Mover
• Available volsync options
• related to https://issues.redhat.com/browse/OADP-1231
• emcmulla@redhat.com please provide a dpa example and a little more context for doc
• NEW VolumeOptions - https://github.com/migtools/volume-snapshot-mover/blob/master/docs/design/volumeOptions.md