func RunPanic(cmd string, args ...string) {
	err := Run(cmd, args...)
	mageutil.PanicOnError(err)
}
Run command.

If mage is run with -v flag, stdout will be used
to print output, if not, output will be hidden.
Stderr will work as normal
Will automatically panic on error
package shutil
import (
	"bytes"
	"io"
	"os"
	"os/exec"
	"fmt"
	"strings"
	"github.com/datastax/cass-operator/mage/util"
	"github.com/magefile/mage/mg"
	"github.com/magefile/mage/sh"
)
func Run(cmd string, args ...string) error {
	return RunWithEnv(nil, cmd, args...)
}
func RunWithEnv(env map[string]string, cmd string, args ...string) error {
	var output io.Writer
	if mg.Verbose() {
		output = os.Stdout
	}
	_, err := sh.Exec(env, output, os.Stderr, cmd, args...)
	return err
}