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

Build failed. https://zuul.opendev.org/t/openstack/buildset/ba4aaf28a6744d0180e60cecfa8bfd... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/950b909e34ea459890cbae17a0d3713f : SUCCESS in 12m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fb614ab6365a492a889543b6d99001ea : SUCCESS in 13m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/4df9b37d470c47cc80c2d8162fa6d854 : TIMED_OUT in 41m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/069546764a01454ca1e3d7d00d012ed9 : SUCCESS in 13m 42s