'Return list of compute nodes in all child cells.'

def compute_node_get_all(self, ctxt, hypervisor_match=None):

    method_kwargs = dict(hypervisor_match=hypervisor_match)
    message = _BroadcastMessage(self, ctxt, 'compute_node_get_all', method_kwargs, 'down', run_locally=True, need_response=True)
    return message.process()
