[Rule based auto-tagging] Add autotagging rule integration tests

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add last index request timestamp columns to the `_cat/indices` API. ([10766](https://github.com/opensearch-project/OpenSearch/issues/10766))
 - Introduce a new pull-based ingestion plugin for file-based indexing (for local testing) ([#18591](https://github.com/opensearch-project/OpenSearch/pull/18591))
 - Add support for search pipeline in search and msearch template ([#18564](https://github.com/opensearch-project/OpenSearch/pull/18564))
+- [Rule based auto-tagging] Add Rule based auto-tagging IT ([#18550](https://github.com/opensearch-project/OpenSearch/pull/18550))
 
 ### Changed
 - Update Subject interface to use CheckedRunnable ([#18570](https://github.com/opensearch-project/OpenSearch/issues/18570))

modules/autotagging-commons/common/src/main/java/org/opensearch/rule/action/UpdateRuleResponse.java

@@ -64,7 +64,7 @@ public XContentBuilder toXContent(XContentBuilder builder, Params params) throws
     /**
      * rule getter
      */
-    Rule getRule() {
+    public Rule getRule() {
         return rule;
     }
 }