Forward port 3.0 GA release notes (opensearch-project#18121)

Signed-off-by: Andrew Ross <andrross@amazon.com>

Author: andrross

CHANGELOG.md

@@ -6,20 +6,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ## [Unreleased 3.x]
 ### Added
 - [Rule based auto-tagging] Add get rule API ([#17336](https://github.com/opensearch-project/OpenSearch/pull/17336))
-- Add multi-threaded writer support in pull-based ingestion ([#17912](https://github.com/opensearch-project/OpenSearch/pull/17912))
-- Unset discovery nodes for every transport node actions request ([#17682](https://github.com/opensearch-project/OpenSearch/pull/17682))
 - Implement parallel shard refresh behind cluster settings ([#17782](https://github.com/opensearch-project/OpenSearch/pull/17782))
 - Bump OpenSearch Core main branch to 3.0.0 ([#18039](https://github.com/opensearch-project/OpenSearch/pull/18039))
-- [Star Tree] Support of Boolean Queries in Aggregations ([#17941](https://github.com/opensearch-project/OpenSearch/pull/17941))
 - Update API of Message in index to add the timestamp for lag calculation in ingestion polling ([#17977](https://github.com/opensearch-project/OpenSearch/pull/17977/))
-- Enabled default throttling for all tasks submitted to cluster manager ([#17711](https://github.com/opensearch-project/OpenSearch/pull/17711))
 - Add composite directory factory ([#17988](https://github.com/opensearch-project/OpenSearch/pull/17988))
 
 ### Changed
-- Change the default max header size from 8KB to 16KB. ([#18024](https://github.com/opensearch-project/OpenSearch/pull/18024))
 - Avoid invalid retries in multiple replicas when querying [#17370](https://github.com/opensearch-project/OpenSearch/pull/17370)
-* Enable concurrent_segment_search auto mode by default[#17978](https://github.com/opensearch-project/OpenSearch/pull/17978)
-- Skip approximation when `track_total_hits` is set to `true` [#18017](https://github.com/opensearch-project/OpenSearch/pull/18017)
 
 ### Dependencies
 - Bump `com.google.code.gson:gson` from 2.12.1 to 2.13.0 ([#17923](https://github.com/opensearch-project/OpenSearch/pull/17923))
@@ -31,11 +24,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Removed
 
 ### Fixed
-- Fix ingest pipeline cannot be executed when retry the failed index requests for update_by_query API and reindex API ([#18003](https://github.com/opensearch-project/OpenSearch/pull/18003))
-- With creation of FilterFieldType, we need unwrap all the MappedFieldType before using the instanceof check. ([#17951](https://github.com/opensearch-project/OpenSearch/pull/17951))
 - Fix simultaneously creating a snapshot and updating the repository can potentially trigger an infinite loop ([#17532](https://github.com/opensearch-project/OpenSearch/pull/17532))
 - Remove package org.opensearch.transport.grpc and replace with org.opensearch.plugin.transport.grpc ([#18031](https://github.com/opensearch-project/OpenSearch/pull/18031))
 
 ### Security
 
-[Unreleased 3.x]: https://github.com/opensearch-project/OpenSearch/compare/aa0e724e...main
+[Unreleased 3.x]: https://github.com/opensearch-project/OpenSearch/compare/3.0...main