guest-agent: fix dummy AppCompose missing 'ports' field

Author: kvinwang

guest-agent/src/rpc_service.rs

@@ -718,6 +718,7 @@ mod tests {
             secure_time: false,
             storage_fs: None,
             swap_size: 0,
+            ports: Vec::new(),
         };
 
         let dummy_appcompose_wrapper = AppComposeWrapper {