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### _Why are the changes needed?_
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kyuubi-pod.yaml start a single kyuubi server, use deployment to start multiple servers.
### _How was this patch tested?_
- [X] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [ ] [Run test](https://kyuubi.readthedocs.io/en/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#1048 from hddong/add-k8s-deployment.
Closes#1047
661463b9 [hongdongdong] [KYUUBI#1047] Use deployment to run kyuubi server HA on k8s
Authored-by: hongdongdong <hongdongdong@cmss.chinamobile.com>
Signed-off-by: Kent Yao <yao@apache.org>
6509a6b925