[Openstack-stable-maint] Stable check of openstack/neutron-vpnaas failed

Build failed. - periodic-neutron-vpnaas-docs-liberty http://logs.openstack.org/periodic-stable/periodic-neutron-vpnaas-docs-liber... : POST_FAILURE in 7m 36s - periodic-neutron-vpnaas-python27-liberty http://logs.openstack.org/periodic-stable/periodic-neutron-vpnaas-python27-l... : POST_FAILURE in 12m 59s - periodic-neutron-vpnaas-docs-mitaka http://logs.openstack.org/periodic-stable/periodic-neutron-vpnaas-docs-mitak... : POST_FAILURE in 7m 30s - periodic-neutron-vpnaas-python27-mitaka http://logs.openstack.org/periodic-stable/periodic-neutron-vpnaas-python27-m... : POST_FAILURE in 11m 55s