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

Build failed. https://zuul.opendev.org/t/openstack/buildset/ca3a64a779d5424bb5db9e65dcc80d... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1e35965a8b594c1dac83b8bf76099e6c : SUCCESS in 3m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e15f366049c449318a2c43c552b854f7 : RETRY_LIMIT in 1m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ea7c0cadc2eb45828df43f32ec02a4a2 : SUCCESS in 3m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e77b95e7432542879d0d722f6dd6c352 : SUCCESS in 3m 39s