ACCUMULO-1239 make balance checker triple-check

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.5@1465065 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1239 make balance checker triple-check

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1465066 13f79535-47bb-0310-9956-ffa450edef68