MB-9782: RAMSIZE not needed for cluster-edit

Change-Id: Ic43025a3339bed7be403466f6a7fcec0c7612ab8
Reviewed-on: http://review.couchbase.org/31556
Reviewed-by: Steve Yen <steve.yen@gmail.com>
Tested-by: Bin Cui <bin.cui@gmail.com>