Update kube to support new pflag/cobra

pkg/util/flags.go

@@ -16,11 +16,23 @@ limitations under the License.
 
 package util
 
+import "strings"
+
 import "github.com/spf13/pflag"
 
+func WordSepNormalizeFunc(f *pflag.FlagSet, name string) pflag.NormalizedName {
+	from := []string{"-", "_"}
+	to := "."
+	for _, sep := range from {
+		name = strings.Replace(name, sep, to, -1)
+	}
+	// Type convert to indicate normalization has been done.
+	return pflag.NormalizedName(name)
+}
+
 // InitFlags normalizes and parses the command line flags
 func InitFlags() {
-	pflag.CommandLine.SetWordSeparators([]string{"-", "_"})
+	pflag.CommandLine.SetNormalizeFunc(WordSepNormalizeFunc)
 	AddAllFlagsToPFlags()
 	pflag.Parse()
 }