cri: fix integration test on cgroupsv2 system
cri: fix integration test on cgroupsv2 system

TestUpdateContainerResources_MemoryLimit still uses old method to
check memlimit in cgroup.

Signed-off-by: Shengjing Zhu <2dd997cfa01a89f57dd2ea7f2dd61043cc88e07b@debian.org>

dmcgowan/containerd,thaJeztah/containerd,containerd/containerd,mikebrow/containerd,estesp/containerd,mikebrow/containerd,containerd/containerd,thaJeztah/containerd,estesp/containerd,dmcgowan/containerd