fix type of internal settings
fix type of internal settings

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