Add missing 'Gerrit-HttpModule' to BUILD

Bug: Issue 10644
Change-Id: I25a08b5f474d173bf42dcf08fb04430981877bca
diff --git a/BUILD b/BUILD
index 112baa9..86eef59 100644
--- a/BUILD
+++ b/BUILD
@@ -12,6 +12,7 @@
     manifest_entries = [
         "Gerrit-PluginName: quota",
         "Gerrit-Module: com.googlesource.gerrit.plugins.quota.Module",
+        "Gerrit-HttpModule: com.googlesource.gerrit.plugins.quota.HttpModule",
     ],
     resources = glob(["src/main/resources/**/*"]),
 )