Add a 5.0 note that allows us the right to add zk=truth improvements during 5.x by default.
Add a 5.0 note that allows us the right to add zk=truth improvements during 5.x by default.

git-svn-id: e799fff536a883f3c27ef733fe770373e8a19271@1658239 13f79535-47bb-0310-9956-ffa450edef68

PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr