[BUG] Upgrade stuck due to Multi-Attach error

[mattmattox]

The deployment vm-import-controller-harvester-vm-import-controller uses a RWO PVC from Longhorn. The issue comes when you try to upgrade it, the new pod ever gets out of ContainerCreating because it's waiting on the PVC to be attached but of course it's still attached to the old pod.

Error:

  Warning  FailedAttachVolume  54s   attachdetach-controller  Multi-Attach error for volume "pvc-bca43bf8-e4a9-4a4f-89ba-c95fdeda3b46" Volume is already used by pod(s) vm-import-controller-harvester-vm-import-controller-7f4bf5l9ln9

To resolve this, we simply need to update the upgrade strategy from rolling to recreate IE delete first then start new one.