56e664c717
### What changes were proposed in this pull request?
To support +8:00 in Spark3 when execute sql
`select to_utc_timestamp("2020-02-07 16:00:00", "GMT+8:00")`
### Why are the changes needed?
+8:00 this format is supported in PostgreSQL,hive, presto, but not supported in Spark3
https://issues.apache.org/jira/browse/SPARK-34392
### Does this PR introduce _any_ user-facing change?
no
### How was this patch tested?
unit test
Closes #31624 from Karl-WangSK/zone.
Lead-authored-by: ShiKai Wang <wskqing@gmail.com>
Co-authored-by: Karl-WangSK <shikai.wang@linkflowtech.com>
Signed-off-by: Sean Owen <srowen@gmail.com>
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