def _sync_instance(self, ctxt, instance):
        if instance.deleted:
            self.instance_destroy_at_top(ctxt, instance)
        else:
            self.instance_update_at_top(ctxt, instance)
Broadcast an instance_update or instance_destroy message up to
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/cells/manager.py/CellsManager._sync_instance