Add ML Controller APIs

[nathaliellenaa]

Description

Added missing ML Controller APIs.

Issues Resolved

Part of opensearch-project/opensearch-py#867.

ML Controller APIs to add

• POST /_plugins/_ml/controllers/{model_id}
• PUT /_plugins/_ml/controllers/{model_id}
• GET /_plugins/_ml/controllers/{model_id}
• DELETE /_plugins/_ml/controllers/{model_id}

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[github-actions]

Changes Analysis

Commit SHA: aa51ade
Comparing To SHA: 9efddb9

API Changes

Summary

├─┬Paths
│ └──[➕] path (4817:3)
└─┬Components
  ├──[➕] requestBodies (28408:7)
  ├──[➕] requestBodies (27974:7)
  ├──[➕] responses (31814:7)
  ├──[➕] responses (31509:7)
  ├──[➕] responses (31568:7)
  ├──[➕] responses (31626:7)
  ├──[➕] parameters (23548:7)
  ├──[➕] parameters (23722:7)
  ├──[➕] parameters (23614:7)
  ├──[➕] parameters (23572:7)
  ├──[➕] schemas (56541:7)
  └──[➕] schemas (56522:7)

Document Element	Total Changes	Breaking Changes
paths	1	0
components	12	0

• Total Changes: 13
• Additions: 13

Report

The full API changes report is available at: https://github.com/opensearch-project/opensearch-api-specification/actions/runs/12716275619/artifacts/2414931443

API Coverage

	Before	After	Δ
Covered (%)	643 (62.98 %)	647 (63.37 %)	4 (0.39 %)
Uncovered (%)	378 (37.02 %)	374 (36.63 %)	-4 (-0.39 %)
Unknown	43	43	0

[dblock]

Looks like there's a test failure, otherwise LGTM.

[nathaliellenaa]

Looks like the failing test is due to the Memory Circuit Breaker flaky error https://github.com/opensearch-project/opensearch-api-specification/actions/runs/12701647488/artifacts/2410641526. I made a fix for this issue in this PR and I can rerun the test once this PR has been merged.

[dblock]

Looks like the failing test is due to the Memory Circuit Breaker flaky error https://github.com/opensearch-project/opensearch-api-specification/actions/runs/12701647488/artifacts/2410641526. I made a fix for this issue in this PR and I can rerun the test once this PR has been merged.

Merged, rebase?

[github-actions]

Spec Test Coverage Analysis

Total	Tested
577	574 (99.48 %)

[dblock]

The logs folder got folded in, remove and add it to .gitignore?

Also check test coverage? We were at 100, we lost something.