When building jdbcConnection for test cases, you can build your own Clickhouse cluster configuration

### Use case

### Describe the solution you'd like
增加配置 selfBuiltCk，支持自建 clickhouse 集群的连接配置，这样便于方便开发者在非clickhouse cloud和容器环境下运行测试用例，如果需要，我很乐意提交PR
Added selfBuiltCk configuration to support the connection configuration of self-built clickhouse clusters, which is convenient for developers to run test cases in non-clickhouse cloud and container environments，I'd be happy to submit a PR if needed

### Describe the alternatives you've considered

### Additional context