fixed compile error after Zookeeper upgrade

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1432761 13f79535-47bb-0310-9956-ffa450edef68
upgrade krati from 0.4.6 to 0.4.8

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1432762 13f79535-47bb-0310-9956-ffa450edef68