If I create a SolrServer as such:
Then create a `MultiCoreSolrServerFactory` as such:
The HttpClient that's created by the cloneLBHttpSolrServer method in SolrServerUtils does not contain the credentials provider that's used in the LBHttpSolrServer.
If the http client isn't cloned and preserve the credentials provider, then I cannot authenticate against the Solr server. If it matters, I'm using DataStax Enterprise and we credentials on our Cassandra keyspace, which requires the same authentication credentials for any Solr request.
I confirmed this on spring data solr 1.2.0 and 1.2.2.