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### _Why are the changes needed?_
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In this PR, we target the existing UTs from a noop server to a real shared Kyuubi server.
### _How was this patch tested?_
- [x] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [ ] [Run test](https://kyuubi.readthedocs.io/en/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#1631 from yaooqinn/resttest.
Closes#1631
2726ab44 [Kent Yao] address comments
c0da8090 [Kent Yao] ci
5d12f70f [Kent Yao] address comments
80e14044 [Kent Yao] Migrating existing rest fe test to real cases
a31ab506 [Kent Yao] Migrating existing rest fe test to real cases
0c1feb45 [Kent Yao] Migrating existing rest fe test to real cases
fbd9769e [Kent Yao] Migrating existing rest fe test to real cases
75cca5ff [Kent Yao] Migrating existing rest fe test to real cases
119712e8 [Kent Yao] Migrating existing rest fe test to real cases
8196e4df [Kent Yao] Migrating existing rest fe test to real cases
Authored-by: Kent Yao <yao@apache.org>
Signed-off-by: Kent Yao <yao@apache.org>