rabbit_log -> logger in MQTT test

Author: mkuratczyk

deps/rabbitmq_mqtt/test/auth_SUITE.erl

@@ -1,3 +1,4 @@
+rabbit_log -> logger in MQTT test
 %% This Source Code Form is subject to the terms of the Mozilla Public
 %% License, v. 2.0. If a copy of the MPL was not distributed with this
 %% file, You can obtain one at https://mozilla.org/MPL/2.0/.
@@ -465,7 +466,7 @@ end_per_testcase(T, Config) when T == queue_bind_permission;
                                  T == loopback_user_connects_from_remote_host ->
     %% So let's wait before logs are surely flushed
     Marker = "MQTT_AUTH_SUITE_MARKER",
-    rpc(Config, 0, rabbit_log, error, [Marker]),
+    rpc(Config, 0, logger, error, [Marker]),
     wait_log(Config, [{[Marker], fun () -> stop end}]),
 
     %% Preserve file contents in case some investigation is needed, before truncating.