[Openstack-stable-maint] Stable check of x/vmware-nsx failed

Build failed. - build-openstack-sphinx-docs http://logs.openstack.org/periodic-stable/opendev.org/x/vmware-nsx/stable/oc... : RETRY_LIMIT in 5m 31s - openstack-tox-py27 http://logs.openstack.org/periodic-stable/opendev.org/x/vmware-nsx/stable/oc... : FAILURE in 6m 46s - openstack-tox-py35 http://logs.openstack.org/periodic-stable/opendev.org/x/vmware-nsx/stable/oc... : FAILURE in 8m 40s