Store unicode codes as ASCII

Signed-off-by: NJames Myatt <james@jamesmyatt.co.uk>

test/lib/01-unpwd-unicode-set.py

 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 
 # Test whether a client produces a correct connect with a unicode username and password.
 
@@ -13,8 +12,8 @@ import paho_test
 
 rc = 1
 keepalive = 60
-username = "úsérnámé-hélló"
-password = "hélló"
+username = "\u00fas\u00e9rn\u00e1m\u00e9-h\u00e9ll\u00f3"
+password = "h\u00e9ll\u00f3"
 connect_packet = paho_test.gen_connect(
     "01-unpwd-unicode-set", keepalive=keepalive, username=username, password=password)
 

test/lib/python/01-unpwd-unicode-set.test

 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 
 from __future__ import unicode_literals
 
@@ -8,7 +7,9 @@ import paho.mqtt.client as mqtt
 mqttc = mqtt.Client("01-unpwd-unicode-set")
 
 run = -1
-mqttc.username_pw_set("úsérnámé-hélló", "hélló")
+username = "\u00fas\u00e9rn\u00e1m\u00e9-h\u00e9ll\u00f3"
+password = "h\u00e9ll\u00f3"
+mqttc.username_pw_set(username, password)
 mqttc.connect("localhost", 1888)
 while run == -1:
     mqttc.loop()