private void writeConfigDefinition(String name, String namespace, Path path, String data) {
            curator.set(path.append(namespace + "." + name), Utf8.toBytes(data));
        }
Feeds all user-defined .def file from the application package into ZooKeeper (both into
/defconfigs and /userdefconfigs
configserver/src/main/java/com/yahoo/vespa/config/server/deploy/ZooKeeperDeployer.java