Update VirtualSerivce to pass Istio validation (#304)
Update VirtualSerivce to pass Istio validation (#304)

* Update VirtualSerivce to pass Istio validation

The Istio validator was rejecting VirtualServices created for Channels.
Adding the PortSelector made the validator happy again.

Fixes #302

* Use common PortName and PortNumber vars

* Remove PortSelector Name

...it causes 503s

knative/eventing,knative/eventing