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### _Why are the changes needed?_
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* Use apache/kyuubi docker hub repo instead of personal repo
* change workflow env to ubuntu-20.04
### _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/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#1199 from ulysses-you/refine-docker.
Closes#1199
2ec73286 [ulysses-you] always
d6ed71b5 [ulysses-you] refine
Authored-by: ulysses-you <ulyssesyou18@gmail.com>
Signed-off-by: ulysses-you <ulyssesyou@apache.org>
95b884e9b7