boto/boto — pull request #2684 by kyleknap (2014-10-16 04:46:32+00:00)
Title: Fix s3 create multipart upload for sigv4

Fixes https://github.com/boto/boto/issues/2609

The changes I made should only affect POST requests for s3 while using sigv4. Behavior for other services will remain the same. I originally removed::

if http_request.method == 'POST':
return ""

in the ``canonical_query_string`` method. However, this cause integration test failures in services like ``sqs``. So, I reverted and overwrote this method specifically for s3. CreateMultipartUpload now works for s3-sigv4.

cc @danielgtaylor @jamesls