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### _Why are the changes needed?_
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Destroy the process after the engine starts. #1796
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [X] Add screenshots for manual tests if appropriate
add conf: `kyuubi.session.engine.startup.waitCompletion false`
- [X] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#1815 from wForget/KYUUBI-1796.
Closes#1796
12aea19a [Wang Zhen] fix
27cb602a [Wang Zhen] fix
e70e7071 [Wang Zhen] add log
ecaf828c [Wang Zhen] regenerate settings.md
a5f6c5de [Wang Zhen] fix desc
09812beb [Wang Zhen] Merge remote-tracking branch 'origin/master' into KYUUBI-1796
27fab5eb [Wang Zhen] [KYUUBI-1796] Destroy the process after the engine starts
Authored-by: Wang Zhen <wangzhen07@qiyi.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>
1d64bb279e
