Fix missing messages on startup.

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/0.7@3144 b32b6428-25c9-4566-ad07-03861ab6144f

apps/tools/xaal/tools/toolbox.py

@@ -534,7 +534,8 @@ def is_alive():
             else:
                 print(f"{msg.source}: {msg.dev_type}")
 
-    def start():
+    async def start():
+        await asyncio.sleep(0.1)        
         print(LINE)
         helper.request_is_alive(dev_type=dev_type)