Made rebuild_gitadmin only take git repositories into account

scripts/gitadmin/rebuild_gitadmin.php

@@ -151,9 +151,12 @@ function rebuildConfiguration($gitosis_root) {
     ->execute();
 
   foreach ($repositories as $repository_id => $repository) {
+    $type = $repository->getVersionControlSystem();
+    if ($type == PhabricatorRepositoryType::REPOSITORY_TYPE_GIT) {
       handleSingleRepository(
         $keydir, $viewer, $repository, $new_configuration, $used_keys);
     }
+  }
 
   write_ini_file($new_configuration, $configuration_file);
   removeUnusedPublicKeys($keydir, $used_keys);