Produced via: `./hack/update-deps.sh --upgrade && ./hack/update-codegen.sh` /assign n3wscott vagababov /cc n3wscott vagababov
* Add the initial caching type definitions. This is largely carried over from https://github.com/knative/serving/pull/1972 * Incorporate feedback from @evankanderson * Add the CRD for the type definition.