fix kokoro

Author: shubham-up-47

google/cloud/storage/_media/requests/download.py

@@ -140,6 +140,7 @@ def _write_to_stream(self, response):
                 self._stream.write(content)
                 self._bytes_downloaded += len(content)
                 local_checksum_object.update(content)
+                response._content_consumed = True
             else:
                 body_iter = response.iter_content(
                     chunk_size=_request_helpers._SINGLE_GET_CHUNK_SIZE,