chore: remove refs to deprecated io/ioutil

Author: testwill

cmd/driver/main.go

@@ -21,7 +21,7 @@ import (
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
 	"gopkg.in/natefinch/lumberjack.v2"
-	"io/ioutil"
+	"io"
 	"log"
 	"os"
 	"strings"
@@ -208,7 +208,7 @@ func main() {
 	// disable the console logging (if anywhere else being done by softlayer or any other pkg)
 	// presently softlayer logs few warning message, which makes the flexdriver unmarshall failure
 	log.SetFlags(0)
-	log.SetOutput(ioutil.Discard)
+	log.SetOutput(io.Discard)
 
 	// Divert all loggers outputs and fmt.printf loggings (this will create issues with flex response)
 	NullDevice, _ := os.Open(os.DevNull)

driver/driver.go

@@ -18,7 +18,6 @@ import (
 	"github.com/IBM/ibmcloud-object-storage-plugin/utils/backend"
 	"github.com/IBM/ibmcloud-object-storage-plugin/utils/parser"
 	"go.uber.org/zap"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path"
@@ -54,7 +53,7 @@ var (
 	stat      = os.Stat
 	unmount   = syscall.Unmount
 	mount     = syscall.Mount
-	writeFile = ioutil.WriteFile
+	writeFile = os.WriteFile
 	mkdirAll  = os.MkdirAll
 	removeAll = os.RemoveAll
 	//hostname, anyerror = os.Hostname()

driver/driver_test.go

@@ -20,7 +20,7 @@ import (
 	"github.com/IBM/ibmcloud-object-storage-plugin/utils/parser"
 	"github.com/stretchr/testify/assert"
 	"go.uber.org/zap"
-	"io/ioutil"
+	"io"
 	"os"
 	"os/exec"
 	"path"
@@ -116,7 +116,7 @@ func getPlugin() *S3fsPlugin {
 		ret := exec.Command(os.Args[0], cs...)
 		ret.Env = []string{"GO_WANT_HELPER_PROCESS=1"}
 		if commandFailure {
-			ret.Stdout = ioutil.Discard
+			ret.Stdout = io.Discard
 		}
 		return ret
 	}

provisioner/ibm-s3fs-provisioner.go

@@ -23,7 +23,6 @@ import (
 	"github.com/IBM/ibmcloud-object-storage-plugin/utils/uuid"
 	"go.uber.org/zap"
 	"google.golang.org/grpc"
-	"io/ioutil"
 	"k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/kubernetes"
@@ -133,7 +132,7 @@ type IBMS3fsProvisioner struct {
 }
 
 var _ controller.Provisioner = &IBMS3fsProvisioner{}
-var writeFile = ioutil.WriteFile
+var writeFile = os.WriteFile
 
 func UnixConnect(addr string, t time.Duration) (net.Conn, error) {
 	unix_addr, _ := net.ResolveUnixAddr("unix", addr)