stop duplicating class name.

this code really liked to duplicate the class name. I think
we can handle having it only once in the string.

Change-Id: Ie720d5b03f1656cacb8662c99412b24cb0641165
Reviewed-on: https://review.openstack.org/20210
Reviewed-by: James E. Blair <corvus@inaugust.com>
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: Clark Boylan <clark.boylan@gmail.com>
Tested-by: Jenkins