Switch API objects to not register per version codecs

Remove Codec from versionInterfaces in meta (RESTMapper is now agnostic
to codec and serialization). Register api/latest.Codecs as the codec
factory and use latest.Codecs.LegacyCodec(version) as an equvialent to
the previous codec.

pkg/apis/authorization/install/install.go

@@ -75,7 +75,6 @@ func enableVersions(externalVersions []unversioned.GroupVersion) error {
 	groupMeta := apimachinery.GroupMeta{
 		GroupVersion:  preferredExternalVersion,
 		GroupVersions: externalVersions,
-		Codec:         runtime.CodecFor(api.Scheme, preferredExternalVersion),
 		RESTMapper:    newRESTMapper(externalVersions),
 		SelfLinker:    runtime.SelfLinker(accessor),
 		InterfacesFor: interfacesFor,
@@ -119,7 +118,6 @@ func interfacesFor(version unversioned.GroupVersion) (*meta.VersionInterfaces, e
 	switch version {
 	case v1beta1.SchemeGroupVersion:
 		return &meta.VersionInterfaces{
-			Codec:            v1beta1.Codec,
 			ObjectConvertor:  api.Scheme,
 			MetadataAccessor: accessor,
 		}, nil

pkg/apis/authorization/register.go

@@ -25,7 +25,7 @@ import (
 const GroupName = "authorization.k8s.io"
 
 // SchemeGroupVersion is group version used to register these objects
-var SchemeGroupVersion = unversioned.GroupVersion{Group: GroupName, Version: ""}
+var SchemeGroupVersion = unversioned.GroupVersion{Group: GroupName, Version: runtime.APIVersionInternal}
 
 // Kind takes an unqualified kind and returns back a Group qualified GroupKind
 func Kind(kind string) unversioned.GroupKind {

pkg/apis/authorization/v1beta1/register.go

@@ -17,7 +17,6 @@ limitations under the License.
 package v1beta1
 
 import (
-	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/unversioned"
 	"k8s.io/kubernetes/pkg/runtime"
 )
@@ -28,8 +27,6 @@ const GroupName = "authorization.k8s.io"
 // SchemeGroupVersion is group version used to register these objects
 var SchemeGroupVersion = unversioned.GroupVersion{Group: GroupName, Version: "v1beta1"}
 
-var Codec = runtime.CodecFor(api.Scheme, SchemeGroupVersion)
-
 func AddToScheme(scheme *runtime.Scheme) {
 	// Add the API to Scheme.
 	addKnownTypes(scheme)