Rename TestAuthRequestMixin so that nose doesn't collect it as a test.
Rename TestAuthRequestMixin so that nose doesn't collect it as a test.

Nose is apparently quite aggressive about what it considers to be a test.
TestAuthRequestMixin was being treated as a test (even though it does not
inherit from unittest.TestCase) solely on account of its name.

openid/python-openid,udacity/python-openid,openid/python-openid,udacity/python-openid