integration: fix test

integration/member_test.go

@@ -19,6 +19,7 @@ import (
 	"io/ioutil"
 	"os"
 	"reflect"
+	"testing"
 
 	"github.com/coreos/etcd/Godeps/_workspace/src/golang.org/x/net/context"
 	"github.com/coreos/etcd/client"