Add Hestia KV only cluster specification
Add Hestia KV only cluster specification

Change-Id: If7caf3786780e0ad9da1698909f7b885043066ad
Reviewed-on: http://review.couchbase.org/65458
Reviewed-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

EricACooper/perfrunner,couchbase/perfrunner,EricACooper/perfrunner,couchbase/perfrunner,couchbase/perfrunner,EricACooper/perfrunner,pavel-paulau/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,pavel-paulau/perfrunner,EricACooper/perfrunner,couchbase/perfrunner,pavel-paulau/perfrunner,couchbase/perfrunner