For VMs with hw_disk_bus=scsi and/or hw_scsi_model=virtio-scsi
the volume won't be identified, because for those VMs the result
from `ls /dev/disk/by-id` will look like this:
scsi-0QEMU_QEMU_HARDDISK_3c8f086d-e1f4-4ce1-a91a-c4a8d6d538bb
This patch extends the current grep by allowing the full UUID of
the volume to be matched as well.
Change-Id: I3c6b7a85f8cbf5a8379965c44be854ea3002123b