Registers required components in application context if not available to
set up environment for usage with Spring Data Solr. Will listen on
SolrServer and SolrRepositories for configuration.
By default an HttpSolrServer is registered unless a zkHost (zookeeper
host) is defined. In that case an instance of CloudSolrServer will be
created.
By default multicore support is enabled, creating instances of
SolrServer for each core defined via @SolrDocument.
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.