Fix a formatting bug (missing %s)
Fix a formatting bug (missing %s)

Change-Id: I7b8e643680dd91c96b40a2c759173846cfa7bfa6
Partial-Bug: 1366249

stackforge/compass-core,baigk/compass-core,baigk/compass-core,stackforge/compass-core,openstack/compass-core,openstack/compass-core,openstack/compass-core,baigk/compass-core,openstack/compass-core,stackforge/compass-core,stackforge/compass-core