Merge branch 'update-cloudfront-model-2013-09-27' into develop

* update-cloudfront-model-2013-09-27:
  Update cloudfront xml tests with new xmlns matching API version
  Update cloudfront to the 2013-09-27 API version
  Apply operation renames before pagination configs
  Remove trailing whitespace
  Update cloudfront to 2013-09-27 API version
Vendor requests library at v2.0.1

This included updating the import statements to use the new
vendored location.  There will be a similar update for the CLI as well.