Fix import of the federation

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 5995929..8ed3152 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -1,3 +1,5 @@
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
 workspace(name = "rules_java")
 
 http_archive(