In case no name provided, it takes the name from
the first container in the pod.

Signed-off-by: Talor Itzhak <titzhak@redhat.com>

This package provides a ControllerGetter which is cgroup version agnostic.
It provides a unified api for testing the mixedcpus feature for both v1 and v2.

The package can be expand in the future for testing additional features
that requires cgroups inspection.

Also in the future this package should be runtime (crun/runc) agnostic.

Signed-off-by: Talor Itzhak <titzhak@redhat.com>

The exec command might return empty value.
In order to have better control of what we get
we should read the files in separate exec calls.

Signed-off-by: Talor Itzhak <titzhak@redhat.com>