Shutdown terminals on api/shutdown

Author: martinRenou

jupyter_server/services/shutdown.py

@@ -11,6 +11,7 @@ class ShutdownHandler(JupyterHandler):
     async def post(self):
         self.log.info("Shutting down on /api/shutdown request.")
 
+        await self.terminal_manager.terminate_all()
         await self.kernel_manager.shutdown_all()
 
         ioloop.IOLoop.current().stop()