NBI component:

- Added missing comment

src/nbi/service/NbiApplication.py

@@ -41,6 +41,9 @@ class NbiApplication:
         self._app.config['SECRET_KEY'] = SECRET_KEY
         self._app.after_request(log_request)
         self._api = Api(self._app, prefix=base_url)
+
+        # Configure KafkaManager to enable SocketIO Servers running in different
+        # gunicorn workers to self-coordinate and share sessions.
         self._sio_client_manager = socketio.KafkaManager(
             url='kafka://{:s}'.format(KafkaConfig.get_kafka_address()),
             channel=KafkaTopic.NBI_SOCKETIO_WORKERS.value