increase race delay
increase race delay

Change-Id: Ibfbef80073aac7e87881a88fe2223f7d7673c154
Reviewed-on: http://review.couchbase.org/38132
Reviewed-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>
Tested-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>

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