[Openstack-stable-maint] Stable check of openstack/placement for ref refs/heads/stable/xena failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/b60cbaee09ed427cb5003eac24ac1b... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ef96af3b568446809e738b80eba474c2 : TIMED_OUT in 31m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fb1fb021b1ae452a8ce738e3ed7b3412 : SUCCESS in 5m 57s - openstack-tox-py38 https://zuul.opendev.org/t/openstack/build/39a9683480c84d1ca86f0a7da5d00c5f : SUCCESS in 4m 42s