clientv3/snapshot: rename snapshot package

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

clientv3/snapshot/v3_snapshot.go

@@ -29,6 +29,7 @@ import (
 
 	"github.com/coreos/etcd/clientv3"
 	"github.com/coreos/etcd/etcdserver"
+	"github.com/coreos/etcd/etcdserver/api/snap"
 	"github.com/coreos/etcd/etcdserver/api/v2store"
 	"github.com/coreos/etcd/etcdserver/etcdserverpb"
 	"github.com/coreos/etcd/etcdserver/membership"
@@ -39,7 +40,6 @@ import (
 	"github.com/coreos/etcd/pkg/types"
 	"github.com/coreos/etcd/raft"
 	"github.com/coreos/etcd/raft/raftpb"
-	"github.com/coreos/etcd/raftsnap"
 	"github.com/coreos/etcd/wal"
 	"github.com/coreos/etcd/wal/walpb"
 
@@ -477,7 +477,7 @@ func (s *v3Manager) saveWALAndSnap() error {
 			},
 		},
 	}
-	sn := raftsnap.New(s.lg, s.snapDir)
+	sn := snap.New(s.lg, s.snapDir)
 	if err := sn.SaveSnap(raftSnap); err != nil {
 		return err
 	}