Adding specs for new _list/indices and _list/shards APIs

.github/workflows/test-spec.yml

@@ -40,10 +40,10 @@ jobs:
             tests: plugins/streaming
           - version: 2.18.0
             hub: opensearchstaging
-            ref: '@sha256:4445e195c53992038891519dc3be0d273cdaad1b047943d68921168ed243e7e9'
+            ref: '@sha256:83e56824438188322f2d477b262e4b55aa3e4d0c03c6f9b2f27de4ecfafc9a62'
           - version: 3.0.0
             hub: opensearchstaging
-            ref: '@sha256:727643acdfebed77bfdb26362dbcff536b7ea02a0cc4ae2da2521729171333de'
+            ref: '@sha256:dac5f937714616e99f698af9ce07610043c38e34abc9e19f48d1a12f0680ea17'
 
     name: test-opensearch-spec (version=${{ matrix.entry.version }}, hub=${{ matrix.entry.hub || 'opensearchproject' }}, tests=${{ matrix.entry.tests || 'default' }})
     runs-on: ubuntu-latest

CHANGELOG.md

@@ -124,6 +124,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Changed `cluster.reroute`'s `metric` path param to use an enum of metrics ([#586](https://github.com/opensearch-project/opensearch-api-specification/pull/586))
 - Changed `indices.stats`'s `metric` path param to use an enum of metrics ([#586](https://github.com/opensearch-project/opensearch-api-specification/pull/586))
 - Changed `CleanupRepositoryResults`' properties to be `int64`s ([#587](https://github.com/opensearch-project/opensearch-api-specification/pull/587))
+- Added `/_list/indices` & `/_list/shards` api specs ([#613](https://github.com/opensearch-project/opensearch-api-specification/pull/613))
 
 ### Deprecated