Use io.ReadAll

Author: YoshiyukiMineo

v2/awsutil/awsutil.go

@@ -3,7 +3,7 @@ package awsutil
 
 import (
 	"errors"
-	"io/ioutil"
+	"io"
 	"net"
 	"net/http"
 	"os/exec"
@@ -19,7 +19,7 @@ func amazonEC2PrivateIPv4() (net.IP, error) {
 	}
 	defer res.Body.Close()
 
-	body, err := ioutil.ReadAll(res.Body)
+	body, err := io.ReadAll(res.Body)
 	if err != nil {
 		return nil, err
 	}