Add test code for using message pack with python mqtt

Messaging/clientEx copy.py

@@ -1,6 +1,7 @@
 import paho.mqtt.client as mqtt
 import time
 import ssl
+import umsgpack
 
 connected = False
 
@@ -38,6 +39,7 @@ pub = input("Enter something to publish: ")
 
 while pub != 'q':
     if(connected):
+        
         mqttc.publish('hello/test', pub)
         pub = input("Enter something to publish: ")
         print('Message is: ' + pub)