Add PrintfWithIndent function

cmd/util.go

@@ -169,4 +169,9 @@ func YesNo(v bool) string {
 
 func PrintWithIndent(indent int, s string) {
 	fmt.Printf("%*s%s", indent, "", s)
-}
+}
+
+func PrintfWithIndent(indent int, format string, a ...interface{}) (n int, err error) {
+	format = fmt.Sprintf("%*s%s", indent, "", format)
+	return fmt.Printf(format, a...)
+}