Removing defaultKey from mqtt default config (to make step.b.s work)
Removing defaultKey from mqtt default config (to make step.b.s work)

telefonicaid/iotagent-mqtt,telefonicaid/iotagent-json,telefonicaid/iotagent-json,telefonicaid/iotagent-mqtt,telefonicaid/iotagent-mqtt,telefonicaid/iotagent-json