Add functest to delete snapshot after freeze
Add functest to delete snapshot after freeze

The test makes sure that even if the snapshot was deleted
before it was completed the vm will still get unfrozen.
The test also checks that the vm FSFreezeStatus is being
updated to freeze un unfreeze.

Signed-off-by: Shelly Kagan <c19778017b3b03b9c1a19cf0a9c7b2b96c9da5c2@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt