'Aborts an already initiated multipart upload
:param container: The destination container
:type container: :class:`Container`
:param object_name: The name of the object which we are uploading
:type object_name: ``str``
:param upload_id: The upload id allocated for this multipart upload
:type upload_id: ``str``'

def _abort_multipart(self, container, object_name, upload_id):

    params = {'uploadId': upload_id}
    request_path = self._get_object_path(container, object_name)
    resp = self.connection.request(request_path, method='DELETE', params=params)
    if (resp.status != httplib.NO_CONTENT):
        raise LibcloudError(('Error    in    multipart    abort.    status_code=%d' % resp.status), driver=self)
