Uses the Ookla speedtest.net CLI utility to test internet speed from the polling engine or a remote machine.
The speedtest command line utility must be installed for this template to work. You can find that (at the time of this writing) at:
https://www.speedtest.net/apps/cli
The polling frequency is currently set to every half hour. Change that to suit your needs.
Also note that you'll have to disable the "other" component - if this is installed on a Windows machine, disable the Linux component. And vice-versa.