Include search replica in _cat/indices response

[vinaykpud]

Description

Added search replica info in the _cat/indices response

➜  curl "localhost:9200/_cat/indices?v"
health status index    uuid                   pri rep srep docs.count docs.deleted store.size pri.store.size
yellow open   products 2YyqpZQdRWKqNSBTFL90tQ   1   2    3          2            0     42.4kb          8.4kb

Related Issues

Resolves #17425
Related #15306

TODO:
Create Issue for updating the documentation for this settings

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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❌ Gradle check result for cd7259a: FAILURE

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[opensearch-trigger-bot]

This PR is stalled because it has been open for 30 days with no activity.