leader选举的源码分析-FastLeaderElection

初始化FastLeaderElection，QuorumCnxManager是一个很核心的对象，用来实现领导选举中的网络连接管理功能，这个后面会用到

public FastLeaderElection(QuorumPeer self, QuorumCnxManager manager){ 
	this.stop = false;
	this.manager = manager; 
	starter(self, manager); 
}