[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/51b4fba... : SUCCESS in 3m 58s - periodic-heat-python27-db-liberty http://logs.openstack.org/periodic-stable/periodic-heat-python27-db-liberty/... : FAILURE in 10m 56s - periodic-heat-docs-mitaka http://logs.openstack.org/periodic-stable/periodic-heat-docs-mitaka/0a7d282/ : SUCCESS in 5m 30s - periodic-heat-python27-db-mitaka http://logs.openstack.org/periodic-stable/periodic-heat-python27-db-mitaka/9... : SUCCESS in 7m 02s