disconnect link before creating dataset
disconnect link before creating dataset

Change-Id: Ia1d73db3631b00fc26cfbc2215e9fad4395a0937
Reviewed-on: http://review.couchbase.org/122138
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: <7c5437523872fffef04ef9d4aaffcc0ca27fba16@gmail.com>

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