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

Build failed. https://zuul.opendev.org/t/openstack/buildset/808064e65558485da11efb44801f59... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e5dda3df7dbb4835ad4f41d3de17d3ee : POST_FAILURE in 10m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/61d2557cf5f6499391c495bb3c17eb1c : SUCCESS in 12m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1be5f175ee0b42a29f68e627eee339ca : SUCCESS in 15m 14s