Annotation ExtRocketMQTemplateConfiguration bug.

[lileiseven]

1. Please describe the issue you observed:

I used the annotation ExtRocketMQTemplateConfiguration to customize the RocketMQTemplate. When I use the RocketMQTemplate to connect Alibaba Cloud's RocketMQ service, it report an authentication failure error.

2. Please tell us about your environment:

rocketmq-spring 2.1.0

3. Other information (e.g. detailed explanation, logs, related issues, suggestions how to fix, etc):

no.

I fixed this bug in Pull request #269 .