Changing zookeeper import version and source. Change to importing from
publicly available version published by LinkedIn instead of the version
published from apache. Apache published version does not support pagination
whereas the one published from LinkedIn does.

Helix dependency transitively pulls zookeeper dependency from org.apache.zookeeper
which conflicts with the zookeeper dependency from com.linkedin.zookeeper that we
introduced for pagination support. We need to exclude this dependency globally.

Updating major version because of zookeeper dependency group change