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

Build failed. https://zuul.opendev.org/t/openstack/buildset/32eaa6de7d7446f88bd639d555552e... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cdf7f8a1858d49da9a35d813d6c3169c : SUCCESS in 3m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c8154b2f942f46a3a7f6830aa31a2e34 : SUCCESS in 3m 32s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5b106d4230c0486bbda5ecb853af9e85 : SUCCESS in 3m 11s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2092b1784d7b4133a52e9c5353bea94c : POST_FAILURE in 11m 27s