[1.4.x] Added tests/requirements/py2.txt.
[1.4.x] Added tests/requirements/py2.txt.

This follows the convention used in other branches so we don't
need a special case in the build script for 1.4.

riklaunim/django-custom-multisite,riklaunim/django-custom-multisite,riklaunim/django-custom-multisite