coreos/etcd — pull request #906 by unihorn (2014-07-25 02:21:48+00:00)
Title: goraft: let leader send denial message only

@xiangli-cmu @philips

Removal notify denies anyone who sends messageVote but not in its peer list. But it may happen that the new join command has not been committed. Let leader be the only guy that is allowed to send denial message.