[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/dcef9c9... : SUCCESS in 2m 59s - periodic-horizon-python26-juno http://logs.openstack.org/periodic-stable/periodic-horizon-python26-juno/24d... : FAILURE in 2m 49s - periodic-horizon-python27-juno http://logs.openstack.org/periodic-stable/periodic-horizon-python27-juno/7ff... : FAILURE in 2m 22s - periodic-horizon-docs-kilo http://logs.openstack.org/periodic-stable/periodic-horizon-docs-kilo/5c43fb9... : SUCCESS in 4m 06s - periodic-horizon-python27-kilo http://logs.openstack.org/periodic-stable/periodic-horizon-python27-kilo/09e... : SUCCESS in 4m 38s