[test/http-adapter] Use of correct http verbs in http adapters
[test/http-adapter] Use of correct http verbs in http adapters

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