webos-image: libpbnjson=11

bc702f4 add schema error reporting of unexpected data type
4117100 Fix building of automated tests
160535a remove checking "optional" in schema validation

CCC GF-5137

Open-webOS-DCO-1.0-Signed-off-by: Eric Blade <eric.blade@lge.com>

Change-Id: I4bdd935d61cff244b68eec609289787fe6627965
Reviewed-on: https://g2g.palm.com/2096
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>