smoketest: config: tunnel-broker: adjust l2tpv3 local/remote addresses
smoketest: config: tunnel-broker: adjust l2tpv3 local/remote addresses

For L2TPv3 to properly work there must be a routing entry present for the
remote side of the tunnel, or use a directly connected subnet.

vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x