schema: fix Flag arguments on the client

Fix Flag arguments appearing as Bool on the client.

https://fedorahosted.org/freeipa/ticket/6009

Reviewed-By: David Kupka <dkupka@redhat.com>

ipaclient/remote_plugins/schema.py

@@ -220,7 +220,7 @@ class _SchemaPlugin(object):
             sensitive = False
         elif (type_name == 'bool' and
                 'default' in schema and
-                schema['default'] == [u'False']):
+                schema['default'][0] == u'False'):
             cls = Flag
             del schema['default']
         else: