raft: set raft.Commit too when setting raftLog.committed

node.go

@@ -150,6 +150,7 @@ func StartNode(id uint64, peers []Peer, election, heartbeat int, storage Storage
 	// TODO(bdarnell): These entries are still unstable; do we need to preserve
 	// the invariant that committed < unstable?
 	r.raftLog.committed = r.raftLog.lastIndex()
+	r.Commit = r.raftLog.committed
 	// Now apply them, mainly so that the application can call Campaign
 	// immediately after StartNode in tests. Note that these nodes will
 	// be added to raft twice: here and when the application's Ready