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### _Why are the changes needed?_
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Closes https://github.com/apache/incubator-kyuubi/issues/1032
### _How was this patch tested?_
- [x] Add some test cases that check the changes thoroughly including negative and positive cases if possible
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Closes#1033 from ulysses-you/engine-session-id.
Closes#1032
5aa5f5f8 [ulysses-you] indention
a97ae1b5 [ulysses-you] nit
aef754b4 [ulysses-you] engine ref id
62399c40 [ulysses-you] cleanup
2bf13a63 [ulysses-you] nit
11e925dd [ulysses-you] engine side generate
da3f51be [ulysses-you] nit
6136f66b [ulysses-you] keep server session id and engien session id consistent
Authored-by: ulysses-you <ulyssesyou18@gmail.com>
Signed-off-by: ulysses-you <ulyssesyou18@gmail.com>
347c932768