tests: mark the control requests in logging output

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1545336 13f79535-47bb-0310-9956-ffa450edef68
tests: remove extra control add from last commit

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1545359 13f79535-47bb-0310-9956-ffa450edef68