fix byte array display in InfoS and ErrorS

Author: yuzhiquan

klog.go

@@ -825,6 +825,8 @@ func kvListFormat(b *bytes.Buffer, keysAndValues ...interface{}) {
 		switch v.(type) {
 		case string, error:
 			b.WriteString(fmt.Sprintf("%s=%q", k, v))
+		case []byte:
+			b.WriteString(fmt.Sprintf("%s=%+q", k, v))
 		default:
 			if _, ok := v.(fmt.Stringer); ok {
 				b.WriteString(fmt.Sprintf("%s=%q", k, v))

klog_test.go

@@ -1067,6 +1067,14 @@ func TestKvListFormat(t *testing.T) {
 			keysValues: []interface{}{"pod", "kubedns", "values", []string{"deployment", "svc", "configmap"}},
 			want:       " pod=\"kubedns\" values=[deployment svc configmap]",
 		},
+		{
+			keysValues: []interface{}{"pod", "kubedns", "bytes", []byte("test case for byte array")},
+			want:       " pod=\"kubedns\" bytes=\"test case for byte array\"",
+		},
+		{
+			keysValues: []interface{}{"pod", "kubedns", "bytes", []byte("��=� ⌘")},
+			want:       " pod=\"kubedns\" bytes=\"\\ufffd\\ufffd=\\ufffd \\u2318\"",
+		},
 		{
 			keysValues: []interface{}{"pod", "kubedns", "maps", map[string]int{"three": 4}},
 			want:       " pod=\"kubedns\" maps=map[three:4]",