testdata for generating json documents.

Change-Id: Ifb9a357eecc1bc69ddb6bb8a93ffd95661390889
Reviewed-on: http://review.couchbase.org/39666
Reviewed-by: John Liang <johliang00@gmail.com>
Reviewed-by: Pratap Chakravarthy <prataprc@couchbase.com>
Tested-by: Pratap Chakravarthy <prataprc@couchbase.com>