<!--
Thanks for sending a pull request!

Here are some tips for you:
  1. If this is your first time, please read our contributor guidelines: https://kyuubi.readthedocs.io/en/latest/community/contributions.html
  2. If the PR is related to an issue in https://github.com/NetEase/kyuubi/issues, add '[KYUUBI #XXXX]' in your PR title, e.g., '[KYUUBI #XXXX] Your PR title ...'.
  3. If the PR is unfinished, add '[WIP]' in your PR title, e.g., '[WIP][KYUUBI #XXXX] Your PR title ...'.
-->

### _Why are the changes needed?_
<!--
Please clarify why the changes are needed. For instance,
  1. If you add a feature, you can talk about the use case of it.
  2. If you fix a bug, you can clarify why it is a bug.
-->

### _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

- [ ] [Run test](https://kyuubi.readthedocs.io/en/latest/tools/testing.html#running-tests

) locally before make a pull request

Closes #755 from pan3793/spark-31.

Closes #755

bb25a395 [Cheng Pan] typo
6b6fd4f7 [Cheng Pan] fix ut
a79af708 [Cheng Pan] change cross version test to build against Spark 3.1 and test on Spark 3.0 binary
2fd0afb4 [Cheng Pan] enable CODECOV with spark 3.1 in travis
f0c8b55c [Cheng Pan] [BUILD] Default build against spark 3.1
Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: fwang12 <fwang12@ebay.com>