Bug Fixed : Percentile calculation _ycsb_perc_calc
Bug Fixed : Percentile calculation _ycsb_perc_calc

Change-Id: If457c605b17aa4024c22f6d827e64037f1362131
Reviewed-on: http://review.couchbase.org/96412
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: <7c5437523872fffef04ef9d4aaffcc0ca27fba16@gmail.com>

couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner,couchbase/perfrunner