Optional instance watchdog timeout and watchdog mode can be set by
adding: procd_set_param $mode $timeout
$mode is an integer [0-1] representing instance watchdog mode of
operation:
0 = disabled
1 = passive mode, client must periodically poke watchdog via ubus
$timeout is an integer representing how often, in seconds, the watchdog must be poked.
Signed-off-by: Daniel Bailey <danielb@meshplusplus.com>