prow/cmd/mkbuild-cluster/main.go
func command(bin string, args ...string) ([]string, *exec.Cmd) {
	cmd := exec.Command(bin, args...)
	cmd.Stderr = os.Stderr
	return append([]string{bin}, args...), cmd
}
func command(bin string, args ...string) ([]string, *exec.Cmd) {
	cmd := exec.Command(bin, args...)
	cmd.Stderr = os.Stderr
	return append([]string{bin}, args...), cmd
}
// command creates an exec.Cmd with Stderr piped to os.Stderr and returns the args