Fixed maven build to work by configuring zigbee-api to build test jar as this is expected by zigbee-serial-default project.
Fixed maven build to work by configuring zigbee-api to build test jar as this is expected by zigbee-serial-default project.

Arvis-Home/zigbee4java,cdjackson/zigbee4java,cdjackson/zigbee4java,cdealti/zigbee4java,cdjackson/zigbee4java,tlaukkan/zigbee4java,tlaukkan/zigbee4java,cdealti/zigbee4java,Arvis-Home/zigbee4java,tlaukkan/zigbee4java