LUCENE-5786: adding more debugging to the test framework.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1606002 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5786: adding more debugging to the test framework.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1606003 13f79535-47bb-0310-9956-ffa450edef68