migrate health_check.py to python3

deploy/health_check.py

@@ -1,8 +1,8 @@
-import xmlrpclib
+import xmlrpc.client
 
 if __name__ == "__main__":
     try:
-        server = xmlrpclib.Server("http://localhost:9005/RPC2")
+        with xmlrpc.client.ServerProxy("http://localhost:9005/RPC2") as server:
             info = server.supervisor.getAllProcessInfo()
             error_states = list(filter(lambda x: x["state"] != 20, info))
             exit(len(error_states))