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

Build failed. - periodic-heat-docs-havana http://logs.openstack.org/periodic-stable/periodic-heat-docs-havana/a90ca62 : SUCCESS in 3m 42s - periodic-heat-python26-havana http://logs.openstack.org/periodic-stable/periodic-heat-python26-havana/3115... : FAILURE in 43s - periodic-heat-python27-havana http://logs.openstack.org/periodic-stable/periodic-heat-python27-havana/511e... : SUCCESS in 3m 43s