migrate health_check.py to python3

deploy/health_check.py

@@ -1,11 +1,11 @@
-import xmlrpclib
+import xmlrpc.client
 
 if __name__ == "__main__":
     try:
-        server = xmlrpclib.Server("http://localhost:9005/RPC2")
-        info = server.supervisor.getAllProcessInfo()
-        error_states = list(filter(lambda x: x["state"] != 20, info))
-        exit(len(error_states))
+        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))
     except Exception as e:
         print(e.with_traceback())
         exit(1)