Support exposing the Audience of a Sequence

[creydr]

As the Eventing OIDC feature track describes, Addressables (and thus Sequences) need to announce their audience in .status.address.audience in the format GROUP/KIND/NAMESPACE/NAME (e.g. flows.knative.dev/sequence/myns/mysequence).

In particular the sequence controller should:

• when the feature flag (see Add authentication.oidc feature flag #7174) is disabled:
  • no change in behavior
• when the feature flag (see Add authentication.oidc feature flag #7174) is enabled:
  • Set the Sequences .status.address.audience accordingly.

Additional Information:

• Requires Add Audience field in duckv1.Addressable pkg#2795
• Requires Add Audience field in CRDs #7189

[CodesbyUnnati]

/assign

[creydr]

Hello @CodesbyUnnati,
thanks for taking this. I just wanted to ask, if you're still planning to work on this? In #7237 we did this for the broker, so this might help you to get started (especially the changes in the pkg/reconciler/broker/broker.go might be useful)

[creydr]

@CodesbyUnnati we can close this in favor of #7294, as we will use the channels audience as the sequences audience.