As of 4.4,
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f8e529ed9
c/r of seccomp filters is supported, so let's check for it in --ms.
Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>