ZOOKEEPER-1917 Apache Zookeeper logs cleartext admin passwords (michim via rakeshr)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/trunk@1631277 13f79535-47bb-0310-9956-ffa450edef68
ZOOKEEPER-2058 rat: exclude *.cer files  (michim via rakeshr)

git-svn-id: https://svn.apache.org/repos/asf/zookeeper/trunk@1631280 13f79535-47bb-0310-9956-ffa450edef68
WIP