* reproduce bug with fixtures
* fix bug reference int port in ingress but use named port in svc targetPort
* add more test cases that cover port handling
   * negative matches
   * multi port test cases
   * add named port tests
   * add a more common multi port setup

Signed-off-by: Sandor Szücs <sandor.szuecs@zalando.de>
Signed-off-by: Arpad Ryszka <arpad.ryszka@gmail.com>
Co-authored-by: Sandor Szücs <sandor.szuecs@zalando.de>