BUG 1659 - non unified returning data default format

Returning value (errors and data) will be by default in JSON format

Change-Id: I65368da31b1364c3e8153d39ab66e1fd8ecc49d3
Signed-off-by: Jozef Gloncak <jgloncak@cisco.com>
Merge "BUG 1659 - non unified returning data default format"