ci: Add job to ensure python2 setup.py compat (#56057)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56057
Just to make sure we don't add anything there that'd break python 2 users from receiving the correct error message
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Test Plan: Imported from OSS
Reviewed By: walterddr
Differential Revision: D27774120
Pulled By: seemethere
fbshipit-source-id: e40a1a2672a69eed3b6e834b1acbb7a04c0adec1
