And make initd script status informative

1. Don't edit provider in /etc/ppp/ppp_on_boot, make
   /etc/ppp/peers/provider a symlink.

2. Fix the shebang in /etc/ppp/ppp_on_boot

3. Change perms on /etc/ppp/ppp_on_boot to enable/disable

Which will prevent two copies from running if testing

At most every 3 hours, check broadcast interfaces to see if they have
connectivity.  This is done by brining ppp0 down if any broadcast
interfaces have link up and addresses assigned.

Restart services when broadcast interface link transitions to up.

Restart just ssh_tunnel if connection is not from an active interface.

Should work if we have both WiFi and Ethernet.

Not all sections are supported, yet

Otherwise we will fail if syslogd is not running

Just because we just started, doesn't mean it wasn't up.

Monitor_modem writes /run/using_ppp when pppd is requested and
conduit_leds sets LED A based on the existence of that file.