SOLR-3397: Insure that replication and SolrCloud are compatible. Actually, just log a warning if SolrCloud is detected and master or slave is configured in solrconfig.xml

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1540930 13f79535-47bb-0310-9956-ffa450edef68