Updated openstack/openstack
Project: openstack/stevedore  4f2b64720fdd96b2bd9595f664d80505949538d5

Migrate tox to use testr

This patch moves all unit tests to use
testr as the test runner. This means all
tests need to be subclassed from unittest
to be discovered by testr

Change-Id: I9b0e782be87ea2b5db72b56ddad1d239a83e9ee3
Closes-Bug: #1330204