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### _Why are the changes needed?_
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Now, we need to rebuild docker image when config changed. Use configmap to save kyuubi config file, then we can change config by edit configmap and restart pod.
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [X] [Run test](https://kyuubi.readthedocs.io/en/latest/tools/testing.html#running-tests) locally before make a pull request
Closes#866 from hddong/kyuubi-859.
Closes#859
caae67d1 [hongdongdong] fix comments
13fc08aa [hongdongdong] [KYUUBI#859]Add kubernetes configmap
Authored-by: hongdongdong <hongdongdong@cmss.chinamobile.com>
Signed-off-by: Kent Yao <yao@apache.org>
d90c21e0b0