Also set up the tests so that the external IP and port for both the
NodePort and LoadBalancer tests. For this it is necessary to pass
in the external cluster IP, and/or set up an external IP for the
LoadBalancer Service.

If neither of these are available, just use port-forwarding as for
the other tests. That doesn't actually test the Service types, since
connections are forwarded to the clusterIP. But the tests can be
run in automation when the external networking is not available.