Automatic merge from release/2.3.0 -> release/2.4.0

* commit '48cc1b29c594c29690bda40dcc4e4142d6400b2e':
  避免auzre请求未释放文件描述符

pkg/util/azure/azure.go

@@ -487,6 +487,7 @@ func waitForComplatetion(client *autorest.Client, req *http.Request, resp *http.
 			if err != nil {
 				return nil, err
 			}
+			defer asyncResp.Body.Close()
 			if asyncResp.StatusCode == 202 {
 				if _location := asyncResp.Header.Get("Location"); len(_location) > 0 {
 					location = _location
@@ -578,6 +579,7 @@ func _jsonRequest(client *autorest.Client, method, domain, baseURL, body string)
 		log.Errorf("Azure %s request: %s \nbody: %s error: %v", req.Method, req.URL.String(), body, err)
 		return nil, err
 	}
+	defer resp.Body.Close()
 
 	if resp.StatusCode == 404 {
 		data := []byte{}