Merge branch 'feature_config_api_version' into dev

Author: tigersk

tigeropen/quote/request/__init__.py

@@ -26,7 +26,7 @@ def biz_model(self, value):
     def get_params(self):
         params = dict()
         params[P_METHOD] = self._method
-        params[P_VERSION] = getattr(self.biz_model, P_VERSION)
+        params[P_VERSION] = getattr(self.biz_model, P_VERSION, None)
 
         if self.biz_model:
             params[P_BIZ_CONTENT] = json.dumps(obj=self.biz_model.to_openapi_dict(), ensure_ascii=False, sort_keys=True,