Stop exposing v1beta3 by default

pkg/kubectl/cmd/util/clientcache.go

@@ -17,6 +17,7 @@ limitations under the License.
 package util
 
 import (
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/api/registered"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/client"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/client/clientcmd"
 )
@@ -59,7 +60,7 @@ func (c *clientCache) ClientConfigForVersion(version string) (*client.Config, er
 	}
 	// TODO: have a better config copy method
 	config := *c.defaultConfig
-	negotiatedVersion, err := client.NegotiateVersion(c.defaultClient, &config, version)
+	negotiatedVersion, err := client.NegotiateVersion(c.defaultClient, &config, version, registered.RegisteredVersions)
 	if err != nil {
 		return nil, err
 	}