Merge pull request #1367 from noerog/patch-1

Payload has gcs_file_name field, not config_name.

Author: gguuss

iot/api-client/gcs_file_to_device/gcs_example_mqtt_device.py

@@ -125,7 +125,7 @@ def on_message(self, unused_client, unused_userdata, message):
         print('Received new config.')
         bucket_name = data['bucket_name']
         print('Bucket name is: \'{}\''.format(bucket_name))
-        config_name = data['config_name']
+        config_name = data['gcs_file_name']
         print('Config name is: \'{}\''.format(config_name))
         # Destination file name is a byte literal because it's a file
         # name.