MB-17162: NewDocument generates docs with wrong size
MB-17162: NewDocument generates docs with wrong size

The problem is that we consider the size of the doc only taking into account one field of the json doc

!!this may affect the comparison with existing results!!!

Change-Id: I99e96be9df41152b14ac9a39c53dc3d1fd295370
Reviewed-on: http://review.couchbase.org/58548
Reviewed-by: Andrei Baranouski <f6b50d8f3f8d6abadc89468769320bb7ef9099f0@gmail.com>
Tested-by: Andrei Baranouski <f6b50d8f3f8d6abadc89468769320bb7ef9099f0@gmail.com>

couchbase/spring,couchbase/spring