[FEATURE] Pass full username to session

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Code of Conduct

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Search before asking

• [X] I have searched in the issues and found no similar issues.

Describe the feature

Currently username passed to the session is truncated up to first / or @. User logged in as bob/DOMAIN will produce session with user=bob. https://github.com/apache/kyuubi/blob/0feacf1776434989c98e1cc305eaff8ad79750f2/kyuubi-common/src/main/scala/org/apache/kyuubi/service/TFrontendService.scala#L147 Therefore there is no way to differentiate users bob/DOMAIN1 and bob/DOMAIN2 inside session. Issue suggests to pass domain part to the session.

Motivation

When using custom GroupProvider and SessionConfAdvisor it might required to know user's domain part of username. In my case it's possible there are bob/DOMAIN1 and bob/DOMAIN2, so I want to differentiate them.

Describe the solution

Add full username including a domain part to the session config, e.g. kyuubi.session.full.user field.

Additional context

No response

Are you willing to submit PR?

• [X] Yes. I would be willing to submit a PR with guidance from the Kyuubi community to improve.
• [ ] No. I cannot submit a PR at this time.