#### Expected behavior
By using kubernetes/helm deployment, expect zookeeper to start successfully and
the other services can connect to zookeeper correctly.
#### Actual behavior
zookeeper did not config and start successfully:
```
"04:11:45.058 [main] INFO org.apache.pulsar.zookeeper.ZooKeeperStarter -
Starting ZK stats HTTP server at port 8000"
"04:11:45.080 [main] INFO org.eclipse.jetty.util.log - Logging initialized
@1887ms"
"04:11:45.158 [main] INFO org.eclipse.jetty.server.Server -
jetty-9.3.11.v20160721"
"04:11:45.201 [main] INFO org.eclipse.jetty.server.handler.ContextHandler -
Started o.e.j.s.ServletContextHandler@7ac2e39b{/,null,AVAILABLE}"
"04:11:45.222 [main] INFO org.eclipse.jetty.server.AbstractConnector - Started
ServerConnector@1a45193b{HTTP/1.1,[http/1.1]}{0.0.0.0:8000}"
"04:11:45.223 [main] INFO org.eclipse.jetty.server.Server - Started @2031ms"
"04:11:45.228 [main] INFO org.apache.zookeeper.server.quorum.QuorumPeerConfig
- Reading configuration from: /pulsar/conf/zookeeper.conf"
"04:11:45.230 [main] WARN org.apache.zookeeper.server.quorum.QuorumPeerConfig
- data/zookeeper is relative. Prepend ./ to indicate that you're sure!"
"04:11:45.230 [main] INFO org.apache.zookeeper.server.quorum.QuorumPeerConfig
- clientPortAddress is 0.0.0.0/0.0.0.0:2181"
"04:11:45.230 [main] INFO org.apache.zookeeper.server.quorum.QuorumPeerConfig
- secureClientPort is not set"
"04:11:45.262 [main] ERROR org.apache.zookeeper.server.quorum.QuorumPeerMain -
Invalid config, exiting abnormally"
```
#### Steps to reproduce
```
cd deployment/kubernetes/helm
helm package pulsar
<upload chart>
helm install --name pulsar
```
#### System configuration
**Pulsar version**: 2.1 and latest on master
[ Full content available at:
https://github.com/apache/incubator-pulsar/issues/2522 ]
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