gluon-core: place ipv4 wan routes into table 1

package/gluon-core/luasrc/lib/gluon/upgrade/110-network

@@ -11,6 +11,7 @@ uci:section('network', 'interface', 'wan', {
 	multicast_querier = false,
 	peerdns = false,
 	auto = true,
+	ip4table = 1,
 })
 
 if not uci:get('network', 'wan', 'proto') then