Add 2.17.1 release notes (opensearch-project#16104)

Signed-off-by: Andriy Redko <andriy.redko@aiven.io>
(cherry picked from commit dff2184)

CHANGELOG.md

@@ -6,7 +6,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ## [Unreleased 2.x]
 ### Added
 - [Offline Nodes] Adds offline-tasks library containing various interfaces to be used for Offline Background Tasks. ([#13574](https://github.com/opensearch-project/OpenSearch/pull/13574))
-- Add path prefix support to hashed prefix snapshots ([#15664](https://github.com/opensearch-project/OpenSearch/pull/15664))
 - Add support for async deletion in S3BlobContainer ([#15621](https://github.com/opensearch-project/OpenSearch/pull/15621))
 - [Workload Management] QueryGroup resource cancellation framework changes ([#15651](https://github.com/opensearch-project/OpenSearch/pull/15651))
 - Implement WithFieldName interface in ValuesSourceAggregationBuilder & FieldSortBuilder ([#15916](https://github.com/opensearch-project/OpenSearch/pull/15916))

release-notes/opensearch.release-notes-2.17.1.md

@@ -0,0 +1,16 @@
+## 2024-10-01 Version 2.17.1 Release Notes
+
+## [2.17.1]
+### Added
+- Add path prefix support to hashed prefix snapshots ([#15664](https://github.com/opensearch-project/OpenSearch/pull/15664))
+- Memory optimisations in _cluster/health API ([#15492](https://github.com/opensearch-project/OpenSearch/pull/15492))
+
+### Dependencies
+
+### Changed
+
+### Deprecated
+
+### Removed
+
+### Fixed