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

Build failed. https://zuul.opendev.org/t/openstack/buildset/f5169a3ab51448a5bf6b9a4e18c56e... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e228dbfa06944ae7bc12e37663bd800f : FAILURE in 5m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/39bbed21168e4f9c884152994546c777 : SUCCESS in 6m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5ad99389605c4245a23778254e005f46 : SUCCESS in 6m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/904030fe206e4263b08c6ec5c8a415f5 : SUCCESS in 6m 53s