addons: Update nginx-ingress to 0.9.0-beta.19
addons: Update nginx-ingress to 0.9.0-beta.19

* Undo rollback f00ecde854245fed921a1491134727204a732ab8
* Port binding regression only occurs with --enable-ssl-passthrough,
which isn't used in these examples. See
https://github.com/kubernetes/ingress-nginx/issues/1788

poseidon/typhoon