Allow configuration of vpa.updatePolicy

[pauvos]

Support for vpa.updatePolicy.updateMode=Auto|Recreate|Initial|Off (default is Auto)

$ helm template application --set=vpa.enabled='true' --validate | grep -A1 updatePolicy
  updatePolicy:
    updateMode: Auto

also works for other updatePolicy settings

$ helm template application --set=vpa.enabled='true' \
  --set=vpa.updatePolicy.updateMode=Off \
  --set=vpa.updatePolicy.minReplicas=3 --validate | grep -A2 updatePolicy
  updatePolicy:
    minReplicas: 3
    updateMode: "Off"

Link to CRD for reference: https://github.com/kubernetes/autoscaler/blob/vertical-pod-autoscaler-1.0.0/vertical-pod-autoscaler/deploy/vpa-v1-crd-gen.yaml#L377

[github-actions]

@pauvos validation successful`

[rasheedamir]

@d3adb5 can you please review it?

[d3adb5]

LGTM!