Changed port string to use auto assignment (travis build fails because the port is in use)
Changed port string to use auto assignment (travis build fails because the port is in use)

pierotofy/WebODM,tradr-project/WebODM,pmumby/WebODM,pmumby/WebODM,OpenDroneMap/WebODM,OpenDroneMap/WebODM,OpenDroneMap/WebODM,OpenDroneMap/WebODM,OpenDroneMap/WebODM,pierotofy/WebODM,tradr-project/WebODM,pierotofy/WebODM,pmumby/WebODM,pierotofy/WebODM,pierotofy/WebODM,pmumby/WebODM,tradr-project/WebODM,tradr-project/WebODM,tradr-project/WebODM,pmumby/WebODM