[Backport 2.x] [Segment Replication] Refactor file cleanup logic and fix PIT/Scroll with remote store.#9272

Merged

mch2 merged 2 commits intoopensearch-project:2.xfrom mch2:2.x

Aug 11, 2023

+595-349

Commits on Aug 11, 2023

[Segment Replication] Refactor file cleanup logic and fix PIT/Scroll with remote store. (opensearch-project#9111 )
mch2
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Fix test SegmentReplicationIndexShardTests.testPrimaryRestart.
mch2
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