Update ZooKeeper version to 3.4.13 - Fixes
<yammer.metrics.core.version>2.2.0</yammer.metrics.core.version>
<yardstick.version>0.8.3</yardstick.version>
<zkclient.version>0.5</zkclient.version>
- <zookeeper.version>3.4.6</zookeeper.version>
+ <zookeeper.version>3.4.13</zookeeper.version>
<!-- OSGI Manifest generation default property values -->
<osgi.import.package>*</osgi.import.package>
