[router] Create mock router for testing purposes
[router] Create mock router for testing purposes

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