Added _cat tests.

[dblock]

Description

Fixed /_cat/pit_segments/{pit_id}, /_cat/cluster_manager, /_cat/allocation, /_cat/shards, and /_cat/thread_pool. Added tests for many of the _cat scenarios and _aliases.

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[github-actions]

Changes Analysis

Commit SHA: 89b2e32
Comparing To SHA: d25459f

API Changes

Summary

├─┬Paths
│ └─┬/_cat/cluster_manager
│   └─┬GET
│     └─┬Responses
│       └─┬200
│         ├──[➕] content (23152:11)
│         └──[➕] content (23150:11)
└─┬Components
  └──[➕] schemas (38408:7)

Document Element	Total Changes	Breaking Changes
paths	2	0
components	1	0

• Total Changes: 3
• Additions: 3

Report

The full API changes report is available at: https://github.com/opensearch-project/opensearch-api-specification/actions/runs/9768516690/artifacts/1661561067

API Coverage

	Before	After	Δ
Covered (%)	483 (47.31 %)	483 (47.31 %)	0 (0 %)
Uncovered (%)	538 (52.69 %)	538 (52.69 %)	0 (0 %)
Unknown	24	24	0