allow skiping ipv6 lookup by adding aaaa-lookups annotation

[k11h-de]

Hi Théo,

as suggested in issue #24 , here's the adapted code, basically just introducing a check whether the annotation fqdnnetworkpolicies.networking.gke.io/aaaa-lookups is set to skip in the FQDNNetworkPolicy.

I tested this locally with following manifest:

apiVersion: networking.gke.io/v1alpha3
kind: FQDNNetworkPolicy
metadata:
  name: allow-test
  namespace: test1
  annotations:
    fqdnnetworkpolicies.networking.gke.io/aaaa-lookups: "skip"
spec:
  podSelector: {}
  egress:
    - to:
      - fqdns:
        - heise.de # resolves to 193.99.144.80 (A) and 2a02:2e0:3fe:1001:302:: (AAAA)
      ports:
      - port: 443
        protocol: TCP

Both scenarios, with and without the fqdnnetworkpolicies.networking.gke.io/aaaa-lookups annotation, the code produces the expected NetworkPolicy.

I have to admit, I haven't added a test - if that is strictly required, please let me know.
Please, feel free to adapt to your naming schema or coding guidelines.

Thanks a lot
Karsten

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[MrTrustor]

/gcbrun

[MrTrustor]

Thank you! Can you add a test in controllers/fqdnnetworkpolicy_controller_test.go ?
Take a look at the existing tests to understand how to build one (using a new Context() function).

[MrTrustor]

/gcbrun

[MrTrustor]

Thanks a lot! This works as expected.