[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/47b3d49ac1b244c88842894dff9597... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/97226fe99b4b44aca9065b10793a7765 : FAILURE in 6m 23s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ab22a17a95f24df194044690f6059767 : SUCCESS in 6m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/cb17af28bc72468b894ef9e91bd55a91 : SUCCESS in 7m 45s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6ab55cc62e694b91b180b8cb4ae58bcb : SUCCESS in 6m 57s