Add umask before tarball creation

Signed-off-by: walkafwalka <2865898-walkafwalka@users.noreply.gitlab.com>

pkg/plugin/installer/http_installer_test.go

@@ -25,6 +25,7 @@ import (
 	"k8s.io/helm/pkg/helm/helmpath"
 	"os"
 	"path/filepath"
+	"syscall"
 	"testing"
 )
 
@@ -213,6 +214,8 @@ func TestExtract(t *testing.T) {
 	//{"README.md", "so you know what's upp"},
 	//{"script.sh", "echo script"},
 
+	syscall.Umask(0000)
+
 	var tarbuf bytes.Buffer
 	tw := tar.NewWriter(&tarbuf)
 	var files = []struct {