ubiquity: replace uses of deprecated io/ioutil

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

ubiquity/ubiquity_platform.go

@@ -9,7 +9,7 @@ import (
 	"crypto/x509"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path"
 	"path/filepath"
 
@@ -93,7 +93,7 @@ func (p *Platform) ParseAndLoad() (ok bool) {
 	p.KeyAlgoUbiquity = p.keyAlgoUbiquity()
 	p.KeyStore = map[string]bool{}
 	if p.KeyStoreFile != "" {
-		pemBytes, err := ioutil.ReadFile(p.KeyStoreFile)
+		pemBytes, err := os.ReadFile(p.KeyStoreFile)
 		if err != nil {
 			log.Error(err)
 			return false
@@ -140,7 +140,7 @@ func LoadPlatforms(filename string) error {
 	relativePath := filepath.Dir(filename)
 	// Attempt to load root certificate metadata
 	log.Debug("Loading platform metadata: ", filename)
-	bytes, err := ioutil.ReadFile(filename)
+	bytes, err := os.ReadFile(filename)
 	if err != nil {
 		return fmt.Errorf("platform metadata failed to load: %v", err)
 	}

ubiquity/ubiquity_test.go

@@ -3,7 +3,7 @@ package ubiquity
 import (
 	"crypto/x509"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"testing"
 	"time"
 
@@ -24,7 +24,7 @@ const (
 var rsa1024Cert, rsa2048Cert, rsa3072Cert, rsa4096Cert, ecdsa256Cert, ecdsa384Cert, ecdsa521Cert *x509.Certificate
 
 func readCert(filename string) *x509.Certificate {
-	bytes, _ := ioutil.ReadFile(filename)
+	bytes, _ := os.ReadFile(filename)
 	cert, _ := helpers.ParseCertificatePEM(bytes)
 	return cert
 }