SOLR-4867: Admin UI - setting loglevel on root throws RangeError (backport for 4.3.1)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1487595 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4228: fix maven test failure

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1487602 13f79535-47bb-0310-9956-ffa450edef68