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

Build failed. - periodic-ceilometer-docs-kilo http://logs.openstack.org/periodic-stable/periodic-ceilometer-docs-kilo/95d9... : SUCCESS in 1m 57s - periodic-ceilometer-python27-kilo http://logs.openstack.org/periodic-stable/periodic-ceilometer-python27-kilo/... : FAILURE in 1m 21s - periodic-ceilometer-docs-liberty http://logs.openstack.org/periodic-stable/periodic-ceilometer-docs-liberty/5... : SUCCESS in 2m 22s - periodic-ceilometer-python27-liberty http://logs.openstack.org/periodic-stable/periodic-ceilometer-python27-liber... : SUCCESS in 3m 33s