We ran pypi deploys on 2.7,3.5 and 3.6.  Only one worked
We ran pypi deploys on 2.7,3.5 and 3.6.  Only one worked

The rest failed because the release had already been made.
This should cause it to only run under python 2.7

I may only need python: 2.7 but the condition guards against us
running multiple tox tests under 2.7 in the future.

edx/django-oauth2-provider,edx/django-oauth2-provider