push-and-pull.sh in zold-0.14.18

- old
+ new

@@ -2,14 +2,14 @@
 
 port=$(reserve_port)
 
 mkdir server
 cd server
-zold node --trace --invoice=NOPREFIX@ffffffffffffffff \
+zold node --trace --invoice=PUSHNPULL@ffffffffffffffff \
   --host=localhost --port=${port} --bind-port=${port} \
   --threads=0 --standalone &
 pid=$!
-trap "kill -9 $pid" EXIT
+trap "halt_nodes ${port}" EXIT
 cd ..
 
 wait_for_port ${port}
 
 zold remote clean