raftexample: update etcdserver to use the new raft module go.etcd.io/raft/v3

Just replaced all go.etcd.io/etcd/raft/v3 with go.etcd.io/raft/v3
under directory contrib/raftexample.

Signed-off-by: Benjamin Wang <wachao@vmware.com>

contrib/raftexample/httpapi.go

@@ -20,7 +20,7 @@ import (
 	"net/http"
 	"strconv"
 
-	"go.etcd.io/etcd/raft/v3/raftpb"
+	"go.etcd.io/raft/v3/raftpb"
 )
 
 // Handler for a http based key-value store backed by raft

contrib/raftexample/kvstore.go

@@ -21,8 +21,8 @@ import (
 	"log"
 	"sync"
 
-	"go.etcd.io/etcd/raft/v3/raftpb"
 	"go.etcd.io/etcd/server/v3/etcdserver/api/snap"
+	"go.etcd.io/raft/v3/raftpb"
 )
 
 // a key-value store backed by raft

contrib/raftexample/main.go

@@ -18,7 +18,7 @@ import (
 	"flag"
 	"strings"
 
-	"go.etcd.io/etcd/raft/v3/raftpb"
+	"go.etcd.io/raft/v3/raftpb"
 )
 
 func main() {

contrib/raftexample/raft.go

@@ -26,13 +26,13 @@ import (
 
 	"go.etcd.io/etcd/client/pkg/v3/fileutil"
 	"go.etcd.io/etcd/client/pkg/v3/types"
-	"go.etcd.io/etcd/raft/v3"
-	"go.etcd.io/etcd/raft/v3/raftpb"
 	"go.etcd.io/etcd/server/v3/etcdserver/api/rafthttp"
 	"go.etcd.io/etcd/server/v3/etcdserver/api/snap"
 	stats "go.etcd.io/etcd/server/v3/etcdserver/api/v2stats"
 	"go.etcd.io/etcd/server/v3/storage/wal"
 	"go.etcd.io/etcd/server/v3/storage/wal/walpb"
+	"go.etcd.io/raft/v3"
+	"go.etcd.io/raft/v3/raftpb"
 
 	"go.uber.org/zap"
 )

contrib/raftexample/raft_test.go

@@ -18,7 +18,7 @@ import (
 	"reflect"
 	"testing"
 
-	"go.etcd.io/etcd/raft/v3/raftpb"
+	"go.etcd.io/raft/v3/raftpb"
 )
 
 func TestProcessMessages(t *testing.T) {

contrib/raftexample/raftexample_test.go

@@ -25,7 +25,7 @@ import (
 	"testing"
 	"time"
 
-	"go.etcd.io/etcd/raft/v3/raftpb"
+	"go.etcd.io/raft/v3/raftpb"
 )
 
 func getSnapshotFn() (func() ([]byte, error), <-chan struct{}) {