Update ElasticsearchAutoConfiguration to ensure that local nodes are
closed when the context is closed. Prior to this commit the close()
method of the Client would be called which had no effect for local
Nodes.
Fixes gh-2480
Long package names are really unnecessary in samples and they
just clutter things up. Also Spring Loaded doesn't work with
org.sfw packages, so to demo that technology you need a
different package name.