[patches] pr - add rule for tunl0 to olsr-tunnel

The default route of VPN03 will be added to olsr-tunnel table. tunl0 is the
interface for incoming SmartGateway tunnels. As there was no rule for tunl0 to
look into olsr-tunnel routing table all SmartGateway clients had no uplink
access. This changeset adds an additional ip rule for tunl0 for the olsr-tunnel
table like "19999:	from all iif tunl0 lookup olsr-tunnel".