Do cleaning up resource before rescheduling.

Fix bug: #1153964

If some exception raised when spawn instance, the instance will be
rescheduled to other host. But just deallocate network before
rescheduling is not enough, like security group filters and volumes
will stay on old host.

So shutdown instance and clean up volumes instead of just deallocate
network before rescheduling.

Change-Id: Ieb6220ae66f0b97a92c50f6998f456968b516fcb
Merge "Do cleaning up resource before rescheduling."