[refactor](http) disable snapshot and get_log_file api (#27724)

Disable 2 http api by default:

1. BE's `/api/snapshot`
2. FE's `/get_log_file`

fe/fe-core/src/main/java/org/apache/doris/httpv2/rest/GetLogFileAction.java

@@ -55,6 +55,9 @@ public class GetLogFileAction extends RestBaseController {
 
     @RequestMapping(path = "/api/get_log_file", method = {RequestMethod.GET, RequestMethod.HEAD})
     public Object execute(HttpServletRequest request, HttpServletResponse response) {
+        if (!Config.enable_get_log_file_api) {
+            return ResponseEntityBuilder.badRequest("feature disabled");
+        }
         executeCheckPassword(request, response);
         checkGlobalAuth(ConnectContext.get().getCurrentUserIdentity(), PrivPredicate.ADMIN);