update client.Config to use GroupVersion

pkg/api/testapi/testapi.go

@@ -24,6 +24,7 @@ import (
 
 	"k8s.io/kubernetes/pkg/api"
 	_ "k8s.io/kubernetes/pkg/api/install"
+	"k8s.io/kubernetes/pkg/api/unversioned"
 	_ "k8s.io/kubernetes/pkg/apis/extensions/install"
 	_ "k8s.io/kubernetes/pkg/apis/metrics/install"
 
@@ -87,6 +88,14 @@ func (g TestGroup) GroupAndVersion() string {
 	return g.GroupVersionUnderTest
 }
 
+func (g TestGroup) GroupVersion() *unversioned.GroupVersion {
+	gv, err := unversioned.ParseGroupVersion(g.GroupVersionUnderTest)
+	if err != nil {
+		panic(err)
+	}
+	return &gv
+}
+
 // Codec returns the codec for the API version to test against, as set by the
 // KUBE_TEST_API env var.
 func (g TestGroup) Codec() runtime.Codec {