Use the NIOServerCnxnFactory for zookeeper in chars pulsar

[gaoran10]

Issue

I updated the version of components in chars pulsar to 2.9.0-candidate-4, but I met an NPE problem when initializing the zookeeper cluster.

refer to issue https://github.com/apache/pulsar/issues/11070

Modify

For charts pulsar, use the org.apache.zookeeper.server.NIOServerCnxnFactory as the default serverCnxnFactory of the zookeeper.

[jeenx]

I'd like to add that zookeeper wouldn't come up on a fresh install due to this. Version was 2.8.1

Apache pulsar chart has the same fix: https://github.com/apache/pulsar-helm-chart/pull/180/files

[ericsyh]

Close stale PR