.
  spec:
    hosts:
    - productpage
    http:
    - route:
      - destination:
          host: productpage
          subset: v1
- apiVersion: networking.istio.io/v1beta1
  kind: VirtualService
  ...
  spec:
    hosts:
    - ratings
    http:
    - route:
      - destination:
          host: ratings
          subset: v1
- apiVersion: networking.istio.io/v1beta1
  kind: VirtualService
  ...
  spec:
    hosts:
    - reviews
    http:
    - route:
      - destination:
          host: reviews
          subse