MB-35506 Handle non latin char for auth

Change-Id: I7646b322146b72bf6bf489942064ad7f5f0ae6eb
Reviewed-on: http://review.couchbase.org/113133
Tested-by: Build Bot <build@couchbase.com>
Reviewed-by: Carlos Gonzalez <carlos.gonzalez@couchbase.com>

Author: mcpaddy

cluster_manager.py

@@ -92,8 +92,8 @@ def __init__(self, hostname, username, password, sslFlag=False, verifyCert=True,
             self.verifyCert = False
             self.caCert = False
 
-        self.username = username
-        self.password = password
+        self.username = username.encode('utf-8').decode('latin1')
+        self.password = password.encode('utf-8').decode('latin1')
         self.timeout = timeout
         self.ssl = self.hostname.startswith("https://")
         self.debug = debug