fix(aliyun log): 'format bool' is missing in 'toString' function (#2406)

contrib/log/aliyun/aliyun.go

@@ -159,6 +159,8 @@ func toString(v interface{}) string {
 		key = strconv.FormatUint(v, 10)
 	case string:
 		key = v
+	case bool:
+		key = strconv.FormatBool(v)
 	case []byte:
 		key = string(v)
 	default:

contrib/log/aliyun/aliyun_test.go

@@ -92,4 +92,8 @@ func TestLog(t *testing.T) {
 	if err != nil {
 		t.Errorf("Log() returns error:%v", err)
 	}
+	err = logger.Log(log.LevelDebug, true, 0)
+	if err != nil {
+		t.Errorf("Log() returns error:%v", err)
+	}
 }