dumpling integration test failed

## Bug Report

Please answer these questions before submitting your issue. Thanks!

### 1. Minimal reproduce step (Required)

### 2. What did you expect to see? (Required)

### 3. What did you see instead (Required)
need to use the old version mc
```
mc: `config` is not a recognized command. Get help using `--help` flag.
```
### 4. What is your TiDB version? (Required)

Start with the dumpling integration test and reproduce the reported failure using the old mc version mentioned in the report. Establish the missing reproduction steps, expected behavior, TiDB version, and actual output before determining what a successful test run should show.

Written by the indexing model from the issue text.