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

Build failed. - periodic-horizon-docs-grizzly http://logs.test.lan/periodic-stable/periodic-horizon-docs-grizzly/19b3e8d : LOST - periodic-horizon-python26-grizzly http://logs.test.lan/periodic-stable/periodic-horizon-python26-grizzly/8a089... : LOST - periodic-horizon-python27-grizzly http://logs.test.lan/periodic-stable/periodic-horizon-python27-grizzly/b0d35... : LOST - periodic-horizon-docs-havana http://logs.test.lan/periodic-stable/periodic-horizon-docs-havana/3064b28 : LOST - periodic-horizon-python26-havana http://logs.test.lan/periodic-stable/periodic-horizon-python26-havana/c315e6... : LOST - periodic-horizon-python27-havana http://logs.test.lan/periodic-stable/periodic-horizon-python27-havana/45f423... : LOST