A colleague of mine opened this pull request:
https://github.com/boto/boto/pull/2337 a few weeks ago. I just wanted to poke somebody to try and get a review. The build is failing in Travis, but it's not do to the code change, seems to be an internal travis problem:
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /home/travis/virtualenv/python2.6.9/build/httpretty
Storing debug log for failure in /home/travis/.pip/pip.log
Ansible, Inc.