OpenAPI v2 schema not published for BackendConfig

[jpbetz]

BackendConfig CRDs are non-structural because they do not have pruning enabled (note in the CRD thatpreserveUnknownFields: true). See https://v1-17.docs.kubernetes.io/docs/tasks/access-kubernetes-api/custom-resources/custom-resource-definitions/#publish-validation-schema-in-openapi-v2.

How to reproduce:

• curl <apiserver-url>/openapi/v2
• Look for the definition "com.google.cloud.v1beta1.BackendConfig". The entry just defines the type as "object".

Pruning can be manually enabled by setting preserveUnknownFields: false in the BackendConfig CRD. Once enabled, /openapi/v2 returns the full schema.

I don't see any reason why pruning needs to be disabled for BackendConfig. It might be worth upgrading to the CRD v1 API at the same time?

[rramkumar1]

@skmatti

[skmatti]

/assign @skmatti