Editable sshkey, mac address field after upgrade
    
    After upgrade, sshkeys of existing users and hosts or mac address are not editable because attribute level rights are not send to Web UI due to lack of ipasshuser/ieee802device object classes.
    
    'w_if_no_aci' attribute flag was introduced to bypass this issue. It makes attribute writable when AttributeLevelRights for the attribute are not present and only when user posses rights for modifying object class attribute.
    
    The flag was set for sshkeys_field and mac address field.
    
    https://fedorahosted.org/freeipa/ticket/3260