some improvements (#939)

1. ospf route conn map should also use version
2. treat nopat as cone

easytier/src/peers/peer_conn.rs

@@ -432,6 +432,7 @@ impl PeerConn {
             loss_rate: (f64::from(self.loss_rate_stats.load(Ordering::Relaxed)) / 100.0) as f32,
             is_client: self.is_client.unwrap_or_default(),
             network_name: info.network_name.clone(),
+            is_closed: self.close_event_notifier.is_closed(),
         }
     }
 }