[Segment Replication] Add changelog entry and fix allocation test (#6250

)

* [Segment Replication] Add changelog entry and fix allocation test

Signed-off-by: Suraj Singh <surajrider@gmail.com>

* Add space

Signed-off-by: Suraj Singh <surajrider@gmail.com>

---------

Signed-off-by: Suraj Singh <surajrider@gmail.com>
(cherry picked from commit f8102d1)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

CHANGELOG.md

@@ -17,6 +17,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add a guardrail to limit maximum number of shard on the cluster ([#6143](https://github.com/opensearch-project/OpenSearch/pull/6143))
 - Add cancellation of in-flight SearchTasks based on resource consumption ([#5606](https://github.com/opensearch-project/OpenSearch/pull/5605))
 - Add support for ppc64le architecture ([#5459](https://github.com/opensearch-project/OpenSearch/pull/5459))
+- [Segment Replication] Add primary weight factor for balanced primary distribution ([#6017](https://github.com/opensearch-project/OpenSearch/pull/6017))
 
 ### Dependencies
 - Update nebula-publishing-plugin to 19.2.0 ([#5704](https://github.com/opensearch-project/OpenSearch/pull/5704))

server/src/internalClusterTest/java/org/opensearch/indices/replication/SegmentReplicationAllocationIT.java

@@ -38,7 +38,7 @@ private void createIndex(String idxName, int shardCount, int replicaCount, boole
         Settings.Builder builder = Settings.builder()
             .put(IndexMetadata.SETTING_NUMBER_OF_SHARDS, shardCount)
             .put(IndexModule.INDEX_QUERY_CACHE_ENABLED_SETTING.getKey(), false)
-            .put(IndexMetadata.SETTING_NUMBER_OF_REPLICAS, REPLICA_COUNT);
+            .put(IndexMetadata.SETTING_NUMBER_OF_REPLICAS, replicaCount);
         if (isSegRep) {
             builder = builder.put(IndexMetadata.SETTING_REPLICATION_TYPE, ReplicationType.SEGMENT);
         } else {