fix test case class
fix test case class

thomas-couchbase/perfrunner,pavel-paulau/perfrunner,hsharsha/perfrunner,dkao-cb/perfrunner,EricACooper/perfrunner,couchbase/perfrunner,vmx/perfrunner,couchbase/perfrunner,PaintScratcher/perfrunner,couchbase/perfrunner,mikewied/perfrunner,pavel-paulau/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,couchbase/perfrunner,mikewied/perfrunner,dkao-cb/perfrunner,thomas-couchbase/perfrunner,pavel-paulau/perfrunner,EricACooper/perfrunner,hsharsha/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,vmx/perfrunner,EricACooper/perfrunner,EricACooper/perfrunner,PaintScratcher/perfrunner