AccountUpdateTool integration test failing

[vgkholla]

com.github.ambry.account.AccountUpdateToolTest > testUpdateAccount FAILED
    org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server within timeout: 2000
        at org.I0Itec.zkclient.ZkClient.connect(ZkClient.java:1120)
        at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:147)
        at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:122)
        at org.apache.helix.manager.zk.ZkClient.<init>(ZkClient.java:60)
        at org.apache.helix.manager.zk.ZkClient.<init>(ZkClient.java:69)
        at org.apache.helix.manager.zk.ZkClient.<init>(ZkClient.java:82)
        at com.github.ambry.commons.HelixNotifier.<init>(HelixNotifier.java:75)
        at com.github.ambry.account.AccountUpdateTool.getHelixAccountService(AccountUpdateTool.java:229)
        at com.github.ambry.account.AccountUpdateTool.updateAccount(AccountUpdateTool.java:196)
        at com.github.ambry.account.AccountUpdateToolTest.createOrUpdateAccountsAndWait(AccountUpdateToolTest.java:218)
        at com.github.ambry.account.AccountUpdateToolTest.testUpdateAccount(AccountUpdateToolTest.java:125)