SOLR-4967: Supporting passing on multi value params when forwarding allowed params in DistributedUpdateProcessor

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1497812 13f79535-47bb-0310-9956-ffa450edef68
call these setters in the magical order

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1497905 13f79535-47bb-0310-9956-ffa450edef68