Broker example using config-br-defaults appears wrong.

[vaikas]

Expected Behavior

https://github.com/knative/docs/tree/master/docs/eventing/broker

The example says this will use config-br-defaults but the spec and annotations are filled in and hence it does not use the defaults from the configmap. It's a fully specified broker.

kubectl create -f - <<EOF
apiVersion: eventing.knative.dev/v1
kind: Broker
metadata:
  annotations:
    eventing.knative.dev/broker.class: MTChannelBasedBroker
  name: default
  namespace: default
spec:
  config:
    apiVersion: v1
    kind: ConfigMap
    name: config-br-default-channel
    namespace: knative-eventing
EOF

Actual Behavior

kubectl create -f - <<EOF
apiVersion: eventing.knative.dev/v1
kind: Broker
metadata:
  name: default
  namespace: default
EOF

Which will then use config-br-defaults to fill in proper values.
@abrennan89

Steps to Reproduce the Problem

Additional Info

Additional context
Add any other context about the problem here.

Install information:

• Platform (GKE, IKS, AKS, etc.):
• Knative Version: HEAD