'Update an instance in its cell.
This method takes a new-world instance object.'

def instance_update_from_api(self, ctxt, instance, expected_vm_state, expected_task_state, admin_state_reset):

    cctxt = self.client.prepare(version='1.16')
    cctxt.cast(ctxt, 'instance_update_from_api', instance=instance, expected_vm_state=expected_vm_state, expected_task_state=expected_task_state, admin_state_reset=admin_state_reset)
