LUCENE-5996: Collections.shuffle(List) is now a forbidden API.


git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1629920 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6589: Test is fixed by the commit in SOLR-6590

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1629923 13f79535-47bb-0310-9956-ffa450edef68