libmachine/mcnutils/utils.go
func TruncateID(id string) string {
	shortLen := 12
	if len(id) < shortLen {
		shortLen = len(id)
	}
	return id[:shortLen]
}
func TruncateID(id string) string {
	shortLen := 12
	if len(id) < shortLen {
		shortLen = len(id)
	}
	return id[:shortLen]
}
// TruncateID returns a shorten id
// Following two functions are from github.com/docker/docker/utils module. It
// was way overkill to include the whole module, so we just have these bits
// that we're using here.