test_integration.host: Export the hostname to dict as string

Our tests do strict type-checking, using unicode string causes failures.

Reviewed-By: Tomas Babej <tbabej@redhat.com>

ipatests/test_integration/host.py

@@ -142,7 +142,7 @@ class BaseHost(object):
 
     def to_dict(self):
         return {
-            'name': self.hostname,
+            'name': str(self.hostname),
             'ip': self.ip,
             'role': self.role,
             'external_hostname': self.external_hostname,