[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/e6f936f2d76f4b77b3512e22a36810... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/92a1fbaf48da479096b96cff520ed2f0 : FAILURE in 6m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/53408f87c9784d25a7dcee14774c009c : SUCCESS in 5m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9a1b50e10279411dac29794d998d4268 : SUCCESS in 5m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/41e6af2da9b24f98a30ef20a0930c6a2 : SUCCESS in 6m 26s