fix: sdk-go http client Location from Asia/Shanghai to UTC

Author: ZStack-Robot

zstack-sdk-go/pkg/client/zstack_http_client.go

@@ -548,8 +548,11 @@ func (cli *ZSHttpClient) getAccessKeyHeader(url, method string) (http.Header, er
 
 	header := http.Header{}
 
-	loc, _ := time.LoadLocation("Asia/Shanghai")
-	date := time.Now().In(loc).Format("Mon, 02 Jan 2006 15:04:05 MST")
+	//loc, _ := time.LoadLocation("Asia/Shanghai")
+	//date := time.Now().In(loc).Format("Mon, 02 Jan 2006 15:04:05 MST")
+
+	loc, _ := time.LoadLocation("UTC")
+	date := time.Now().In(loc).Format("Mon, 02 Jan 2006 15:04:05 UTC")
 
 	contextPath := fmt.Sprintf("/%s", cli.contextPath)
 	uri := url[strings.Index(url, contextPath)+len(contextPath):]