account for added krbcanonicalname attribute during xmlrpc tests

https://fedorahosted.org/freeipa/ticket/3864

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

ipatests/test_xmlrpc/test_user_plugin.py

@@ -976,6 +976,7 @@ def get_user_result(uid, givenname, sn, operation='show', omit=[],
             mepmanagedentry=[get_group_dn(uid)],
             objectclass=add_oc(objectclasses.user, u'ipantuserattrs'),
             krbprincipalname=[u'%s@%s' % (uid, api.env.realm)],
+            krbcanonicalname=[u'%s@%s' % (uid, api.env.realm)]
         )
     if operation in ('show', 'show-all', 'find', 'mod'):
         result.update(