Added API for setting the current position for an UAV
Added API for setting the current position for an UAV

RMUASD-Team2-2017/UASD,RMUASD-Team2-2017/UASD,RMUASD-Team2-2017/UASD,RMUASD-Team2-2017/UASD,RMUASD-Team2-2017/UASD