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### _Why are the changes needed?_
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Add kyuubi server operation state rate. It will be helpful for us to look into kyuubi server running states.
### _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
- [x] [Run test](https://kyuubi.readthedocs.io/en/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#1809 from zhenjiaguo/add_operation_state_rate.
Closes#1698
815ebc2c [zhenjiaguo] comment
149983ca [zhenjiaguo] add operation state rate
Authored-by: zhenjiaguo <zhenjiaguo@gmail.com>
Signed-off-by: Kent Yao <yao@apache.org>
555dfac5e3
