CBQE:0 Change to dgm % and addition of deletes to make verification manageable

Change-Id: Iab87ecffc6adb7f5807ae9ecfbbbade86e563e54
Reviewed-on: http://review.couchbase.org/38378
Tested-by: Aruna Piravi <aruna@couchbase.com>
Reviewed-by: Aruna Piravi <aruna@couchbase.com>