allow this monster test to print stuff to stdout

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1629363 13f79535-47bb-0310-9956-ffa450edef68
don't try to add too many docs in our monster tests

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_5x@1629367 13f79535-47bb-0310-9956-ffa450edef68