注释掉parrent
从develop3.0.4版本合并到主干
Merge branch 'develop'

Conflicts:
	pom.xml
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
修改日志。
增加hook
重构为协议增加扩展字段形式
Merge branch 'develop' of gitlab.alibaba-inc.com:middleware/rocketmq into develop
修改日志中的版本显示。
添加通过集群获取所有topic列表的方法。
延长超时时间。
优化MQProtols
增加签名
Merge branch 'develop' of http://gitlab.alibaba-inc.com/middleware/rocketmq into develop
删除MQProtos类