Description of problem:
VM using px-csi-db-shared storage PVC can't Live Migrate. Getting error Unsafe migration: Migration without shared storage is unsafe.

Version-Release number of selected component (if applicable):
4.14

How reproducible:
100%

Steps to Reproduce:
1.Create VM with DV/PVC on px-csi-db-shared storage
2.Start VM
3.Migrate VM

Actual results:
Live Migration fails

Expected results:
Live Migration succeeds

Additional info:
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal SuccessfulCreate 65m disruptionbudget-controller Created PodDisruptionBudget kubevirt-disruption-budget-jqlcx
Normal SuccessfulCreate 65m virtualmachine-controller Created virtual machine pod virt-launcher-fedora-continuous-gopher-c2xtk
Normal Created 65m virt-handler VirtualMachineInstance defined.
Normal Started 65m virt-handler VirtualMachineInstance started.
Normal PreparingTarget 64m virt-handler Migration Target is listening at 10.129.2.49, on ports: 41433,38365,33377
Warning Migrated 64m virt-handler VirtualMachineInstance migration uid 884b7c08-b51b-4516-ae96-21198fb15a79 failed. reason:Live migration failed error encountered during MigrateToURI3 libvirt api call: virError(Code=81, Domain=10, Message='Unsafe migration: Migration without shared storage is unsafe')

W/A for this is to allow unsafe migration in HCO/KV
$ oc -n openshift-cnv get hco kubevirt-hyperconverged -o json | jq .metadata.annotations
{
"kubevirt.kubevirt.io/jsonpatch": "[{ \"op\": \"add\",\"path\": \"/spec/configuration/migrations\",\"value\": {\"unsafeMigrationOverride\": true}}]"
}
$ oc -n openshift-cnv get kv kubevirt-kubevirt-hyperconverged -o json | jq .spec.configuration.migrations.unsafeMigrationOverride
true

Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal SuccessfulCreate 65m disruptionbudget-controller Created PodDisruptionBudget kubevirt-disruption-budget-jqlcx
Normal SuccessfulCreate 65m virtualmachine-controller Created virtual machine pod virt-launcher-fedora-continuous-gopher-c2xtk
Normal Created 65m virt-handler VirtualMachineInstance defined.
Normal Started 65m virt-handler VirtualMachineInstance started.
Normal PreparingTarget 64m virt-handler Migration Target is listening at 10.129.2.49, on ports: 41433,38365,33377
Warning Migrated 64m virt-handler VirtualMachineInstance migration uid 884b7c08-b51b-4516-ae96-21198fb15a79 failed. reason:Live migration failed error encountered during MigrateToURI3 libvirt api call: virError(Code=81, Domain=10, Message='Unsafe migration: Migration without shared storage is unsafe')
Normal SuccessfulUpdate 22s (x2 over 64m) virtualmachine-controller Expanded PodDisruptionBudget kubevirt-disruption-budget-jqlcx
Normal PreparingTarget 18s (x4 over 64m) virt-handler VirtualMachineInstance Migration Target Prepared.
Normal Migrating 18s (x2 over 64m) virt-handler VirtualMachineInstance is migrating.
Normal PreparingTarget 18s virt-handler Migration Target is listening at 10.129.2.49, on ports: 36541,33947,44747
Normal Migrated 13s virt-handler The VirtualMachineInstance migrated to node ip-10-0-74-151.us-east-2.compute.internal.
Normal Deleted 13s virt-handler Signaled Deletion
Normal SuccessfulUpdate 9s (x2 over 64m) disruptionbudget-controller shrank PodDisruptionBudget kubevirt-disruption-budget-jqlcx