Updated openstack/openstack
Project: openstack/oslo-incubator  63278ca59bf4ba7a87fd37abe668ef66dac1f558

Add tests.unit.db.sqlalchemy.test_migrate to py33

This test module is running fine in Python 3.3, so it's being added to
tox.ini

Change-Id: I9e40e24ef081fb6299fa2e1b3dfe777f391ead21