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### _Why are the changes needed?_
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Add KYUUBI_CTL_JAVA_OPTS to configure java opts of kyuubi-ctl. For details: #1439.
### _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/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#1440 from wForget/KYUUBI-1439.
Closes#1439
bbbf1f23 [wForget] [KYUUBI-1439] Add KYUUBI_CTL_JAVA_OPTS to configure java opts of kyuubi-ctl. update settings.md
da7779a7 [wForget] [KYUUBI-1439] Add KYUUBI_CTL_JAVA_OPTS to configure java opts of kyuubi-ctl.
Authored-by: wForget <643348094@qq.com>
Signed-off-by: Kent Yao <yao@apache.org>
b7e94ff45c