SOLR-4916: Move MiniDfsCluster test dependencies from solr test-framework to solr-core; download solr-core test dependencies to solr/core/test-lib/ instead of solr/core/lib/; download DIH test dependencies to solr/contrib/dataimporthandler/test-lib instead of [...]/lib/

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1502105 13f79535-47bb-0310-9956-ffa450edef68