bump(github.com/goraft/raft): 6bf34b9

Move from coreos/raft to goraft/raft and update to latest.

third_party/github.com/goraft/raft/config.go

@@ -0,0 +1,7 @@
+package raft
+
+type Config struct {
+	CommitIndex uint64 `json:"commitIndex"`
+	// TODO decide what we need to store in peer struct
+	Peers []*Peer `json:"peers"`
+}