You need to add the os-testr test dependency with regard to the sable/librety global requirements (see https://github.com/openstack/requirements/blob/stable/liberty/global-requirements.txt#L108). Then yes, you can pretty much replace the 'testr' string by 'ostestr', plus you'll have to deal with any edge case which might occur.
You need to add the os-testr test dependency with regard to the sable/librety global requirements (see https:/ /github. com/openstack/ requirements/ blob/stable/ liberty/ global- requirements. txt#L108).
Then yes, you can pretty much replace the 'testr' string by 'ostestr', plus you'll have to deal with any edge case which might occur.