Change default config to match documentation
Change default config to match documentation

In the absence of any defined config we want to match the behavior
that the documentation would hint is the default.

actmd/statsd-elasticsearch-backend,satanovskyj/statsd-elasticsearch-backend,actmd/statsd-elasticsearch-backend,satanovskyj/statsd-elasticsearch-backend,markkimsal/statsd-elasticsearch-backend,markkimsal/statsd-elasticsearch-backend