zdtm: Make arch specific tests to have \Space at the end

Otherwise we might have a clash

| Execute zdtm/live/static/vdso01ns/static/pipe00

Reported-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Andrew Vagin <avagin@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>