zdtm: cmdlinenv00 -- fix false positive fail on 'auxv' corruption after 32-bit -> 64-bit migration

Content of /proc/$pid/auxv declared as array of long and this file hasn't compat layer.

https://jira.sw.ru/browse/PSBM-16280



Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>