As part of https://fedorahosted.org/freeipa/ticket/5281, the has_keytab attribute was removed from results of service-mod command. Removing this attribute from list of expected keys to prevent failing tests. Ticket: https://fedorahosted.org/freeipa/ticket/6149 Reviewed-By: Ganna Kaihorodova <gkaihoro@redhat.com>