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

Build failed. - periodic-keystone-docs-liberty http://logs.openstack.org/periodic-stable/periodic-keystone-docs-liberty/b1d... : POST_FAILURE in 12m 43s - periodic-keystone-python27-db-liberty http://logs.openstack.org/periodic-stable/periodic-keystone-python27-db-libe... : SUCCESS in 8m 29s - periodic-keystone-docs-mitaka http://logs.openstack.org/periodic-stable/periodic-keystone-docs-mitaka/191f... : SUCCESS in 5m 52s - periodic-keystone-python27-db-mitaka http://logs.openstack.org/periodic-stable/periodic-keystone-python27-db-mita... : SUCCESS in 10m 47s