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

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4795dabd45e446fca2d3579951f35bc7 : SUCCESS in 16m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e9f879b331074bfda8f27988a394b69b : TIMED_OUT in 41m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/db18865b6c2f4c60bba77267b802e78d : SUCCESS in 41m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a56a30e0b2cc4258855bbba718d994a2 : SUCCESS in 25m 04s