Add nodeaffinity to prevent scheduling on virtual-kubelet nodes

[aramase]

Describe the solution you'd like
[A clear and concise description of what you want to happen.]
Add nodeaffinity to prevent the CSI driver pods from being scheduled on virtual-kubelet nodes.

Using type: virtual-kubelet label.

affinity:
  nodeAffinity:
    requiredDuringSchedulingIgnoredDuringExecution:
      nodeSelectorTerms:
        - key: type
          operator: NotIn
          values:
          - virtual-kubelet

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]
We should approach this by adding an affinity field in the values.yaml and then setting this affinity by default in the values file.

Environment:

• Secrets Store CSI Driver version: (use the image tag):
• Azure Key Vault provider version: (use the image tag):
• Kubernetes version: (use kubectl version):
• Cluster type: (e.g. AKS, aks-engine, etc):

[nilekhc]

I am working on this

[aramase]

Closed with #486