I checked locally and this issue is caused clearly by https://github.com/openstack/oslo.privsep/commit/f368430f13183c3d09d68c80184d854449da2e87 in oslo.privsep. When I reverted it, tests passed.
I checked locally and this issue is caused clearly by https:/ /github. com/openstack/ oslo.privsep/ commit/ f368430f13183c3 d09d68c80184d85 4449da2e87 in oslo.privsep.
When I reverted it, tests passed.