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

Build failed. - periodic-horizon-docs-juno http://logs.openstack.org/periodic-stable/periodic-horizon-docs-juno/3318fb9... : SUCCESS in 2m 38s - periodic-horizon-python26-juno http://logs.openstack.org/periodic-stable/periodic-horizon-python26-juno/8e0... : FAILURE in 2m 46s - periodic-horizon-python27-juno http://logs.openstack.org/periodic-stable/periodic-horizon-python27-juno/ef3... : FAILURE in 2m 40s - periodic-horizon-docs-kilo http://logs.openstack.org/periodic-stable/periodic-horizon-docs-kilo/42fb81f... : SUCCESS in 4m 10s - periodic-horizon-python27-kilo http://logs.openstack.org/periodic-stable/periodic-horizon-python27-kilo/b10... : SUCCESS in 5m 51s