Include guava copyright announcement
Include guava copyright announcement

penghuazhou/incubator-rocketmq,penghuazhou/incubator-rocketmq,vsair/incubator-rocketmq,lindzh/incubator-rocketmq,DR-YangLong/RocketMQ,shroman/incubator-rocketmq,Vansee/RocketMQ,shroman/incubator-rocketmq,lindzh/incubator-rocketmq,lindzh/incubator-rocketmq,DR-YangLong/RocketMQ,vesense/incubator-rocketmq,vesense/incubator-rocketmq,vsair/incubator-rocketmq,penghuazhou/incubator-rocketmq,vsair/incubator-rocketmq,vesense/incubator-rocketmq,shroman/incubator-rocketmq