This looks to me like you might have the opposite version – a very old kernel? I’m used to seeing the 4.4 Linux kernel on Pi’s running Raspbian Jessie. Could you run:
cat /etc/os-release
to see what version of Raspbian you’re running? The Cayenne Pi Agent currently supports Raspbian Jessie and Jessie Lite, though if you’re tied to some other OS, perhaps the Cayenne Linux Agent or a Python MQTT Client would be other options to explore for connecting your device to Cayenne.