Allow 1 second for final status request (same as legacy Android code)

psiphon/config.go

@@ -33,7 +33,7 @@ const (
 	CONNECTION_WORKER_POOL_SIZE                    = 10
 	TUNNEL_POOL_SIZE                               = 1
 	TUNNEL_CONNECT_TIMEOUT                         = 20 * time.Second
-	TUNNEL_OPERATE_SHUTDOWN_TIMEOUT                = 500 * time.Millisecond
+	TUNNEL_OPERATE_SHUTDOWN_TIMEOUT                = 1000 * time.Millisecond
 	TUNNEL_PORT_FORWARD_DIAL_TIMEOUT               = 10 * time.Second
 	TUNNEL_SSH_KEEP_ALIVE_PAYLOAD_MAX_BYTES        = 256
 	TUNNEL_SSH_KEEP_ALIVE_PERIOD_MIN               = 60 * time.Second