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

Build failed. - periodic-heat-docs-liberty http://logs.openstack.org/periodic-stable/periodic-heat-docs-liberty/a56ea84... : SUCCESS in 3m 48s - periodic-heat-python27-db-liberty http://logs.openstack.org/periodic-stable/periodic-heat-python27-db-liberty/... : FAILURE in 9m 18s - periodic-heat-docs-mitaka http://logs.openstack.org/periodic-stable/periodic-heat-docs-mitaka/a3ac69c/ : SUCCESS in 3m 31s - periodic-heat-python27-db-mitaka http://logs.openstack.org/periodic-stable/periodic-heat-python27-db-mitaka/d... : FAILURE in 8m 59s