Ensure Frr logs to the local2 syslog facility to allow sorting all
Frr (staticd, ospfd) logs into a dedicated /var/log/routing log file.
We activate OSPF debugging, but keep log level at 'informational' for
the time being. The YANG model needs some sort of "knob" to toggle
debug messages when troubleshooting OSPF.
Fixes#541
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
