Small change in lib_json:add_field/3
Small change in lib_json:add_field/3

EricssonResearch/iot-framework-engine,projectcs13/sensor-cloud,EricssonResearch/iot-framework-engine,projectcs13/sensor-cloud,projectcs13/sensor-cloud,EricssonResearch/iot-framework-engine,EricssonResearch/iot-framework-engine