Remove CSI and storage class management from EKS-A for vSphere provider

[jiayiwang7]

Currently we have a specific storage class installed here https://github.com/aws/eks-anywhere/blob/main/pkg/providers/vsphere/config/defaultStorageClass.yaml which is not flexible, as well as unnecessary management of a driver that is not required for running a cluster. So we want to remove it from the EKS Anywhere create/upgrade flow so users can manage CSI on their own if they require it, with an implementation for VSphere listed here.

[drewvanstone]

We will issue a warning that the CSI driver will be removed in an upcoming release. This issue is being moved to the 0.17 release

[vivek-koppuru]

With #5918, we will give a warning to all our users when disableCSI is set to false or not specified to tell them to switch to managing their CSI driver and StorageClass on their own if they require it.