Unfortunately there doesnt appear to be much flexibility in the various
hardware watchdogs on radios, so setting the watchdog > 60 seconds mostly
doesnt work. So rework the settings to allow for this and that our watchdog
tests must be frequent and quick.
* Watchdog support, initial version.
The watchdog monitors three things:
1. A set of important system daemons.
2. A set of pingable ip addresses.
3. A time the node should reboot everyday.