[GRPC] Add accessUnixDomainSocket permission for transport-grpc (#20649)

Signed-off-by: Andriy Redko <drreta@gmail.com>

Author: reta

CHANGELOG.md

@@ -8,7 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add getWrappedScorer method to ProfileScorer for plugin access to wrapped scorers ([#20548](https://github.com/opensearch-project/OpenSearch/issues/20548))
 - Support expected cluster name with validation in CCS Sniff mode ([#20532](https://github.com/opensearch-project/OpenSearch/pull/20532))
 - Choose the best performing node when writing with append-only index ([#20065](https://github.com/opensearch-project/OpenSearch/pull/20065))
-- Add security policy to allow `accessUnixDomainSocket` in `transport-grpc` module ([#20463](https://github.com/opensearch-project/OpenSearch/pull/20463))
+- Add security policy to allow `accessUnixDomainSocket` in `transport-grpc` module ([#20463](https://github.com/opensearch-project/OpenSearch/pull/20463), [#20649](https://github.com/opensearch-project/OpenSearch/pull/20649))
 - Add range validations in query builder and field mapper ([#20497](https://github.com/opensearch-project/OpenSearch/issues/20497))
 - [Workload Management] Enhance Scroll API support for autotagging ([#20151](https://github.com/opensearch-project/OpenSearch/pull/20151))
 - Add indices to search request slowlog ([#20588](https://github.com/opensearch-project/OpenSearch/pull/20588))

modules/transport-grpc/src/main/plugin-metadata/plugin-security.policy

@@ -6,7 +6,7 @@
  * compatible open source license.
  */
 
-grant codeBase "${codebase.grpc-netty-shaded}" {
+grant {
    // for reading the system-wide configuration for the backlog of established sockets
    permission java.io.FilePermission "/proc/sys/net/core/somaxconn", "read";