lxc-checkconfig: verify new[ug]idmap are setuid-root
lxc-checkconfig: verify new[ug]idmap are setuid-root

Signed-off-by: Serge Hallyn <c9ddb6c25a8f77bd31ba26bb8332c4e1aa2c6778@hallyn.com>

terceiro/lxc,caglar10ur/lxc,GreatFruitOmsk/lxc,aeris/lxc,ss1h2a3tw/lxc,federicobriata/lxc,federicobriata/lxc,thmo/lxc,aeris/lxc,caglar10ur/lxc,thmo/lxc,hallyn/lxc,terceiro/lxc,federicobriata/lxc,aeris/lxc,thmo/lxc,GreatFruitOmsk/lxc,ss1h2a3tw/lxc,hallyn/lxc,LynxChaus/lxc,GreatFruitOmsk/lxc,caglar10ur/lxc,ss1h2a3tw/lxc,LynxChaus/lxc,terceiro/lxc,hallyn/lxc,LynxChaus/lxc