Ditto Mapper is able to map only function blocks/features for matching device input

[aedelmann]

Currently, the ditto mapper maps all features according to the Vorto Information Models, even though the input does not always contain all the data to cater all features.
Therefore it would need to be possible to only map those ditto features who which there is data in the device input payload.

Example JSON Input coming from device:
{"batteryVoltage : "2322mV"}

Vorto Infomodel (Schema) : http://vorto.eclipse.org/#/details/devices.aws.button/AWSIoTButton/1.0.0

Ditto Output:

{ "batteryVoltage": { "properties":{ "sensor_units":"mV", "sensor_value":2322.0 } } }