Github user prabhjyotsingh commented on the issue:
https://github.com/apache/zeppelin/pull/2704
This looks OK to me.
@jithinchandranj can you add some a small note
[here](https://github.com/apache/zeppelin/blob/master/docs/setup/security/shiro_authentication.md#configure-realm-optional),
on how to use CAS as well.---
