Create directory using os.MkDirAll, as mkdir -p does not work on windows

pkg/minikube/cluster/start.go

@@ -186,9 +186,9 @@ func commandRunner(h *host.Host) (command.Runner, error) {
 		return &command.FakeCommandRunner{}, nil
 	}
 
-  	if driver.BareMetal(h.Driver.DriverName()) {
+	if driver.BareMetal(h.Driver.DriverName()) {
 		glog.Infof("returning ExecRunner for %q driver", d)
-    		return command.NewExecRunner(), nil
+		return command.NewExecRunner(), nil
 	}
 	if driver.IsKIC(d) {
 		glog.Infof("Returning KICRunner for %q driver", d)

pkg/provision/provision.go

@@ -19,6 +19,7 @@ package provision
 import (
 	"bytes"
 	"fmt"
+	"os"
 	"os/exec"
 	"path"
 	"path/filepath"
@@ -116,16 +117,19 @@ func configureAuth(p miniProvisioner) error {
 
 func copyHostCerts(authOptions auth.Options) error {
 	log.Infof("copyHostCerts")
-	execRunner := command.NewExecRunner()
+
+	err := os.MkdirAll(authOptions.StorePath, 0700)
+	if err != nil {
+		log.Errorf("mkdir failed: %v", err)
+	}
+
 	hostCerts := map[string]string{
 		authOptions.CaCertPath:     path.Join(authOptions.StorePath, "ca.pem"),
 		authOptions.ClientCertPath: path.Join(authOptions.StorePath, "cert.pem"),
 		authOptions.ClientKeyPath:  path.Join(authOptions.StorePath, "key.pem"),
 	}
 
-	if _, err := execRunner.RunCmd(exec.Command("mkdir", "-p", authOptions.StorePath)); err != nil {
-		return err
-	}
+	execRunner := command.NewExecRunner()
 	for src, dst := range hostCerts {
 		f, err := assets.NewFileAsset(src, path.Dir(dst), filepath.Base(dst), "0777")
 		if err != nil {