I want to change the storagePolicyName used in the default StorageClass deployed in VMware

**What would you like to be added**:
I want to change the storagePolicyName used in the [default StorageClass](https://github.com/aws/eks-anywhere/blob/main/pkg/providers/vsphere/config/defaultStorageClass.yaml) deployed in VMware.

**Why is this needed**:
The default storage class deployed to VMware clusters is hardcoded to use the default storage policy in VMware. Many administrators disable that policy and deploy custom policies in their VMware environments.

Note that there is an issue mentioning this #1353 currently. However, that issue refers to the VSphereMachineConfig, which has nothing to do with Kubernetes Storage Policies.

Start with pkg/providers/vsphere/config/defaultStorageClass.yaml and compare its hardcoded storagePolicyName with the VMware deployment path. Determine how a custom policy could be supplied without confusing this StorageClass with the VSphereMachineConfig discussed in issue #1353; done means the default VMware StorageClass can use an administrator-selected policy.

Written by the indexing model from the issue text.