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### _Why are the changes needed?_
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KyuubiSessionImpl hold the underlying transport of KyuubiSyncThriftClient, this PR move it inside KyuubiSyncThriftClient
### _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#1483 from yaooqinn/KyuubiSyncThriftClient.
Closes#1483
497c5e4e [Kent Yao] address comment
b9f8943b [Kent Yao] Revamp KyuubiSessionImpl and KyuubiSyncThriftClient
78f4bab8 [Kent Yao] Revamp KyuubiSessionImpl and KyuubiSyncThriftClient
Authored-by: Kent Yao <yao@apache.org>
Signed-off-by: Fei Wang <fwang12@ebay.com>
aecf4a8b4e