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

Build failed. - periodic-nova-docs-kilo http://logs.openstack.org/periodic-stable/periodic-nova-docs-kilo/c3b1914/ : FAILURE in 6m 18s - periodic-nova-python27-kilo http://logs.openstack.org/periodic-stable/periodic-nova-python27-kilo/25109b... : FAILURE in 6m 51s - periodic-nova-docs-liberty http://logs.openstack.org/periodic-stable/periodic-nova-docs-liberty/c1b7ad1... : SUCCESS in 9m 38s - periodic-nova-python27-liberty http://logs.openstack.org/periodic-stable/periodic-nova-python27-liberty/593... : SUCCESS in 13m 03s