[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/df65e60 : SUCCESS in 4m 19s - periodic-heat-python26-havana http://logs.openstack.org/periodic-stable/periodic-heat-python26-havana/cb75... : FAILURE in 3m 34s - periodic-heat-python27-havana http://logs.openstack.org/periodic-stable/periodic-heat-python27-havana/cc2d... : FAILURE in 4m 30s