Simplify creation of Elasticsearch containers in tests

Remove the ElasticNodeInfo class which is just a wrapper around
the container's HTTP hostname and port. Instead we can just use
the container and get the hostname and port directly.

This reduces the amount of boilerplate code in the tests where
the containers are created.

Change-Id: I969fb3708ce1616182fa98c1c5bfccca658e1250
13 files changed
tree: 3c4955d6bebe6089fcf2bd3363ba14e042171a57
  1. java/
  2. javatests/