[Backport 1.x] Add support for composable index templates (#437)#445

Merged

dblock merged 1 commit intoopensearch-project:1.xfrom Xtansia:backport/backport-437-to-1.x

Nov 22, 2023

+3,010-525

Commits on Nov 21, 2023

Add support for composable index templates (opensearch-project#437 )
Xtansia
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