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### _Why are the changes needed?_
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1. move time functions from Rowset to RowSetUtils
2. move schema to spark package
### _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
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Closes#1566 from hddong/move-time-functions.
Closes#1565
75de2e8d [hongdongdong] private
8b16217b [hongdongdong] [KYUUBI #1565] Move time functions to RowSetUtils and move schema to spark package
Authored-by: hongdongdong <hongdongdong@cmss.chinamobile.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>
11e208a688