Add community_id ingest processor (opensearch-project#12121)

* Add community id ingest processor

Signed-off-by: Gao Binlong <gbinlong@amazon.com>

* Modify change log

Signed-off-by: Gao Binlong <gbinlong@amazon.com>

* Optimize the code

Signed-off-by: Gao Binlong <gbinlong@amazon.com>

---------

Signed-off-by: Gao Binlong <gbinlong@amazon.com>
Signed-off-by: Shivansh Arora <hishiv@amazon.com>

CHANGELOG.md

@@ -137,6 +137,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Support index level allocation filtering for searchable snapshot index ([#11563](https://github.com/opensearch-project/OpenSearch/pull/11563))
 - Add `org.opensearch.rest.MethodHandlers` and `RestController#getAllHandlers` ([11876](https://github.com/opensearch-project/OpenSearch/pull/11876))
 - New DateTime format for RFC3339 compatible date fields ([#11465](https://github.com/opensearch-project/OpenSearch/pull/11465))
+- Add community_id ingest processor ([#12121](https://github.com/opensearch-project/OpenSearch/pull/12121))
 - Add support for Google Application Default Credentials in repository-gcs ([#8394](https://github.com/opensearch-project/OpenSearch/pull/8394))
 - Remove concurrent segment search feature flag for GA launch ([#12074](https://github.com/opensearch-project/OpenSearch/pull/12074))
 - Enable Fuzzy codec for doc id fields using a bloom filter ([#11022](https://github.com/opensearch-project/OpenSearch/pull/11022))

libs/common/src/main/java/org/opensearch/common/network/InetAddresses.java

@@ -52,7 +52,7 @@ public static boolean isInetAddress(String ipString) {
         return ipStringToBytes(ipString) != null;
     }
 
-    private static byte[] ipStringToBytes(String ipString) {
+    public static byte[] ipStringToBytes(String ipString) {
         // Make a first pass to categorize the characters in this string.
         boolean hasColon = false;
         boolean hasDot = false;