[HUDI-4639] Flink-sql batch query support query delete_record#6435

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flashJd wants to merge 5 commits intoapache:masterfrom

flashJd:sql_support_emit_delete

Commits on Aug 4, 2022

support retain hour cleaning policy for flink
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Commits on Aug 5, 2022

Merge branch 'master' of github.com:flashJd/hudi
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Commits on Aug 11, 2022

Merge branch 'master' of github.com:flashJd/hudi
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Commits on Aug 12, 2022

Merge branch 'master' of github.com:flashJd/hudi
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Commits on Aug 18, 2022

flink-sql support emit delete records
flashJd
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