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

Build failed.

- periodic-keystone-docs-icehouse http://logs.openstack.org/periodic-stable/periodic-keystone-docs-icehouse/62... : SUCCESS in 2m 44s - periodic-keystone-python26-icehouse http://logs.openstack.org/periodic-stable/periodic-keystone-python26-icehous... : FAILURE in 23m 35s - periodic-keystone-python27-icehouse http://logs.openstack.org/periodic-stable/periodic-keystone-python27-icehous... : FAILURE in 28m 09s