对gossip的removeEndpoint 进行了分析。发现了相应的MS中关闭OutboundTcp连接的调用
Merge branch 'commont_laud-1.2-new' of https://github.com/sainthxd/cassandra into commont_laud-1.2-new
Merge branch 'commont_laud-1.2-new' of https://github.com/sainthxd/cassandra into commont_laud-1.2-new
删除metrics分支中错误提交到本分支的代码