Fixes racing condition when message is sent to broker before topic logs are created

Author: asdaraujo

test/testutil.py

@@ -125,7 +125,7 @@ def setUp(self):
                 self.client.load_metadata_for_topics(self.topic, ignore_leadernotavailable=False)
                 if self.client.has_metadata_for_topic(topic):
                     break
-            except LeaderNotAvailableError, InvalidTopicError:
+            except (LeaderNotAvailableError, InvalidTopicError):
                 time.sleep(1)
         else:
             raise KafkaTimeoutError('Timeout loading topic metadata!')