Create new conversion Factory interface

Create a new conversion Factory interface for CRDs, and split out
NewDelegatingConverter as a standalone package-level function, instead
of being part of CRConverterFactory.

Signed-off-by: Andy Goldstein <andy.goldstein@redhat.com>

cmd/kube-apiserver/app/apiextensions.go

@@ -23,6 +23,7 @@ import (
 	v1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
 	"k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
 	apiextensionsapiserver "k8s.io/apiextensions-apiserver/pkg/apiserver"
+	"k8s.io/apiextensions-apiserver/pkg/apiserver/conversion"
 	apiextensionsoptions "k8s.io/apiextensions-apiserver/pkg/cmd/server/options"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
@@ -71,10 +72,17 @@ func createAPIExtensionsConfig(
 		apiextensionsapiserver.Scheme); err != nil {
 		return nil, err
 	}
+
 	crdRESTOptionsGetter, err := apiextensionsoptions.NewCRDRESTOptionsGetter(etcdOptions)
 	if err != nil {
 		return nil, err
 	}
+
+	conversionFactory, err := conversion.NewCRConverterFactory(serviceResolver, authResolverWrapper)
+	if err != nil {
+		return nil, err
+	}
+
 	apiextensionsConfig := &apiextensionsapiserver.Config{
 		GenericConfig: &genericapiserver.RecommendedConfig{
 			Config:                genericConfig,
@@ -83,8 +91,7 @@ func createAPIExtensionsConfig(
 		ExtraConfig: apiextensionsapiserver.ExtraConfig{
 			CRDRESTOptionsGetter: crdRESTOptionsGetter,
 			MasterCount:          masterCount,
-			AuthResolverWrapper:  authResolverWrapper,
-			ServiceResolver:      serviceResolver,
+			ConversionFactory:    conversionFactory,
 		},
 	}