Apply suggestions from code review

Co-authored-by: Márk Sági-Kazár <sagikazarmark@users.noreply.github.com>
Signed-off-by: m.nabokikh <maksim.nabokikh@flant.com>

storage/kubernetes/client_test.go

@@ -3,8 +3,18 @@ package kubernetes
 import (
 	"hash"
 	"hash/fnv"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
 	"sync"
 	"testing"
+	"time"
+
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/require"
+
+	"github.com/dexidp/dex/storage/kubernetes/k8sapi"
 )
 
 // This test does not have an explicit error condition but is used

storage/kubernetes/transport.go

@@ -82,13 +82,15 @@ type inClusterTransportHelper struct {
 }
 
 func newInClusterTransportHelper(info k8sapi.AuthInfo) *inClusterTransportHelper {
-	user := inClusterTransportHelper{
+	user := &inClusterTransportHelper{
 		info:          info,
 		now:           time.Now,
 		tokenLocation: "/var/run/secrets/kubernetes.io/serviceaccount/token",
 	}
+
 	user.UpdateToken()
-	return &user
+
+	return user
 }
 
 func (c *inClusterTransportHelper) UpdateToken() {