Fix test_resource_collection_post_widget_without_enough_filesystem_permissions when executed using root
Fix test_resource_collection_post_widget_without_enough_filesystem_permissions when executed using root

jpajuelo/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud,rockneurotiko/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud,jpajuelo/wirecloud,rockneurotiko/wirecloud