[CBD-1249]: Change to vbuckets=16 to test duration of script.
Change-Id: I15e8727e3dad3b3fb1c5c80d290c848b89d209a9
Reviewed-on: http://review.couchbase.org/34263
Reviewed-by: Eric Limare <eric.limare@couchbase.com>
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>