[fit] add netty display error default config

Author: CodeCasterX

framework/fel/java/services/tool-service/src/test/java/modelengine/fel/tool/support/HttpToolTest.java

@@ -176,7 +176,7 @@ void shouldReturnNull() {
         Tool.Info info = readToolInfo("void.json");
         Tool tool = createTool(info);
 
-        String result = cast(tool.execute());
+        Object result = tool.execute();
         assertThat(result).isEqualTo(null);
     }
 

framework/fit/java/fit-builtin/plugins/fit-http-server-netty/src/main/resources/application.yml

@@ -13,3 +13,4 @@ plugin:
       core-thread-num: 10
       max-thread-num: 100
       queue-capacity: 0
+      display-error: false