Update cloudfront to 2013-09-27 API version

Will need to update translate.py to fix this.
Remove trailing whitespace
Apply operation renames before pagination configs

This allows you to refer to operations by their transformed names
instead of their names from the model.

This was specifically for cloudfront, where we strip off the API version
from the operation names, but want to apply the same pagination configs
defined in cloudfront.extra.json.  Otherwise we have to update the
pagination configs every time we update the model.
Update cloudfront to the 2013-09-27 API version
Update cloudfront xml tests with new xmlns matching API version

Fixes the failing tests.
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