[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/0c0f352... : SUCCESS in 2m 35s - periodic-horizon-python26-juno http://logs.openstack.org/periodic-stable/periodic-horizon-python26-juno/a8a... : FAILURE in 2m 10s - periodic-horizon-python27-juno http://logs.openstack.org/periodic-stable/periodic-horizon-python27-juno/e95... : FAILURE in 2m 15s - periodic-horizon-docs-kilo http://logs.openstack.org/periodic-stable/periodic-horizon-docs-kilo/e719ac6... : SUCCESS in 3m 06s - periodic-horizon-python27-kilo http://logs.openstack.org/periodic-stable/periodic-horizon-python27-kilo/4b5... : SUCCESS in 5m 23s