tests: make RMQ test client test in-memory

tests/brokers/rabbit/test_test_client.py

@@ -20,7 +20,7 @@
 @pytest.mark.asyncio()
 class TestTestclient(BrokerTestclientTestcase):
     async def test_rpc_conflicts_reply(self, broker, queue):
-        async with TestRabbitBroker(broker) as br:
+        async with TestRabbitBroker(broker, with_real=False) as br:
             with pytest.raises(SetupError):
                 await br.publish(
                     "",