c/r: bump criu version requirements
c/r: bump criu version requirements

Since we're relying on 1.8 for the seccomp stuff, let's refuse to use
anything lower than that.

Signed-off-by: Tycho Andersen <10c18fcb898ee6b17d6575d444b125d10b3f4d6a@canonical.com>
Acked-by: Serge E. Hallyn <3df611b026e4639bee8aef7a4beb2e39fcebb313@ubuntu.com>

GreatFruitOmsk/lxc,akshaykarle/lxc,akshaykarle/lxc,caglar10ur/lxc,thmo/lxc,Distrotech/lxc,GreatFruitOmsk/lxc,thmo/lxc,ysbnim/lxc,hallyn/lxc,hfuCN/lxc,QingweiPeterLan/cs188-lxc,ss1h2a3tw/lxc,LynxChaus/lxc,LynxChaus/lxc,ysbnim/lxc,ss1h2a3tw/lxc,terceiro/lxc,armcc/lxc,armcc/lxc,ksperis/lxc,cjwatson/lxc,terceiro/lxc,aeris/lxc,ksperis/lxc,cjwatson/lxc,QingweiPeterLan/cs188-lxc,cjwatson/lxc,bostjan/lxc,GreatFruitOmsk/lxc,Distrotech/lxc,federicobriata/lxc,hallyn/lxc,tych0/lxc,LynxChaus/lxc,caglar10ur/lxc,terceiro/lxc,Distrotech/lxc,QingweiPeterLan/cs188-lxc,ss1h2a3tw/lxc,federicobriata/lxc,caglar10ur/lxc,armcc/lxc,hfuCN/lxc,federicobriata/lxc,hfuCN/lxc,tych0/lxc,aeris/lxc,thmo/lxc,aeris/lxc,akshaykarle/lxc,hallyn/lxc,bostjan/lxc,bostjan/lxc,ksperis/lxc,ysbnim/lxc,tych0/lxc