[integration] update integration folder to reflect new packet structure as well
[integration] update integration folder to reflect new packet structure as well

Conflicts:
	integration/router/main.go

mgranberry/ttn,TheThingsNetwork/ttn,jvanmalder/ttn,TheThingsNetwork/ttn,mgranberry/ttn,mgranberry/ttn,LoRaWanSoFa/ttn,jvanmalder/ttn,LoRaWanSoFa/ttn,TheThingsNetwork/ttn,jvanmalder/ttn