raft change from http to grpc

master grpc port is fixed to http port + 10000

weed/server/raft_server_handlers.go

@@ -1,21 +0,0 @@
-package weed_server
-
-import (
-	"github.com/chrislusf/seaweedfs/weed/operation"
-	"net/http"
-)
-
-func (s *RaftServer) HandleFunc(pattern string, handler func(http.ResponseWriter, *http.Request)) {
-	s.router.HandleFunc(pattern, handler)
-}
-
-func (s *RaftServer) statusHandler(w http.ResponseWriter, r *http.Request) {
-	ret := operation.ClusterStatusResult{
-		IsLeader: s.topo.IsLeader(),
-		Peers:    s.Peers(),
-	}
-	if leader, e := s.topo.Leader(); e == nil {
-		ret.Leader = leader
-	}
-	writeJsonQuiet(w, r, http.StatusOK, ret)
-}