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### _Why are the changes needed?_
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Make KYUUBI_WORK_DIR_ROOT as the default root path. For details: #1509.
### _How was this patch tested?_
- [X] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [X] Add screenshots for manual tests if appropriate
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Closes#1519 from wForget/KYUUBI-1509.
Closes#1509
ff078e5f [Wang Zhen] [KYUUBI-1509] Make KYUUBI_WORK_DIR_ROOT as the default root path.
Authored-by: Wang Zhen <wangzhen07@qiyi.com>
Signed-off-by: Kent Yao <yao@apache.org>
(cherry picked from commit 986d9830db)
Signed-off-by: Kent Yao <yao@apache.org>
7c0313f0df