fix(code): replace calls to ioutil EE-4425 (#7878)

api/kubernetes/cli/nodes_limits_test.go

@@ -1,14 +1,15 @@
 package cli
 
 import (
+	"reflect"
+	"testing"
+
 	portainer "github.com/portainer/portainer/api"
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/kubernetes"
 	kfake "k8s.io/client-go/kubernetes/fake"
-	"reflect"
-	"testing"
 )
 
 func newNodes() *v1.NodeList {

api/kubernetes/cli/service_account.go

@@ -37,7 +37,7 @@ func (kcl *KubeClient) GetServiceAccountBearerToken(userID int) (string, error)
 
 // SetupUserServiceAccount will make sure that all the required resources are created inside the Kubernetes
 // cluster before creating a ServiceAccount and a ServiceAccountToken for the specified Portainer user.
-//It will also create required default RoleBinding and ClusterRoleBinding rules.
+// It will also create required default RoleBinding and ClusterRoleBinding rules.
 func (kcl *KubeClient) SetupUserServiceAccount(userID int, teamIDs []int, restrictDefaultNamespace bool) error {
 	serviceAccountName := UserServiceAccountName(userID, kcl.instanceID)
 

api/kubernetes/kubeclusteraccess_service.go

@@ -5,7 +5,7 @@ import (
 	"encoding/base64"
 	"encoding/pem"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strings"
 
 	portainer "github.com/portainer/portainer/api"
@@ -63,7 +63,7 @@ func getCertificateAuthorityData(tlsCertPath string) (string, error) {
 		return "", errTLSCertNotProvided
 	}
 
-	data, err := ioutil.ReadFile(tlsCertPath)
+	data, err := os.ReadFile(tlsCertPath)
 	if err != nil {
 		return "", errors.Wrap(errTLSCertFileMissing, err.Error())
 	}

api/kubernetes/kubeclusteraccess_service_test.go

@@ -2,7 +2,7 @@ package kubernetes
 
 import (
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strings"
 	"testing"
 
@@ -38,7 +38,7 @@ const certDataString = "MIIC5TCCAc2gAwIBAgIJAJ+poiEBdsplMA0GCSqGSIb3DQEBCwUAMBQx
 func createTempFile(filename, content string, t *testing.T) string {
 	tempPath := t.TempDir()
 	filePath := fmt.Sprintf("%s/%s", tempPath, filename)
-	ioutil.WriteFile(filePath, []byte(content), 0644)
+	os.WriteFile(filePath, []byte(content), 0644)
 
 	return filePath
 }