Description of problem

latest containerd by this commit containerd/containerd@c0f0b21 had moved the creation of "rootfs" from create bundle to create Container,
thus kata shimv2 should also take care of creating the "rootfs" when it doesn't exist.

Expected result

(replace this text with an explanation of what you thought would happen)

Actual result

(replace this text with details of what actually happened)

(replace this text with the output of the kata-collect-data.sh script, after
you have reviewed its content to ensure it does not contain any private
information).