RemoteResource downloads sometimes fail

[chivay]

🤔

Traceback (most recent call last):
   File "/opt/venvs/drakcore/lib/python3.7/site-packages/drakcore/process.py", line 86, in process
    outputs = plugin.handler(self.current_task, task_resources, self.minio)
   File "/opt/venvs/drakcore/lib/python3.7/site-packages/drakcore/postprocess/log_index.py", line 58, in generate_log_index
    with resource.download_temporary_file() as tmp_file:
   File "/usr/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)
   File "/opt/venvs/drakcore/lib/python3.7/site-packages/karton2/resource.py", line 282, in download_temporary_file
    self.download_to_file(tmp.name)
   File "/opt/venvs/drakcore/lib/python3.7/site-packages/karton2/resource.py", line 257, in download_to_file
    self._minio.fget_object(self.bucket, self.uid, path)
   File "/opt/venvs/drakcore/lib/python3.7/site-packages/minio/api.py", line 691, in fget_object
    raise InvalidSizeError(msg)
 minio.error.InvalidSizeError: InvalidSizeError: message: Data written 30748 bytes is smaller than the specified size 31171 bytes

[psrok1]

See #170