Implement CSIManager interface introduced in https://github.com/kubernetes/kubernetes/pull/135012

[gnufied]

kubernetes/kubernetes#135012 introduced a new CSIManager interface which needs to be implemented by CAS interfaces.

We need to fix this in CAS even if CSINode limit awareness is not enabled, because without the corresponding fix in CAS - the plugin will get a nil CSIManager when running the simulations which will cause the CAS to panic.

The fix is included in #8721

[adrianmoisey]

/area cluster-autoscaler