Added tests for the notifications plugin.

[dblock]

Description

Added tests for the notifications plugin.

The additional docker-compose boots a webhook notifications channel that just responds with {ok: true} to everything.

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[github-actions]

Changes Analysis

Commit SHA: 179708b
Comparing To SHA: 6b63759

API Changes

Summary

├─┬Paths
│ └─┬/_plugins/_notifications/configs
│   └─┬GET
│     ├──[➕] parameters (22410:13)❌ 
│     └──[➕] parameters (22404:13)❌ 
└─┬Components
  ├──[➕] parameters (22410:7)
  ├──[➕] parameters (22404:7)
  └─┬notifications._common:RestStatus
    ├──[➕] enum (53262:11)
    ├──[➕] enum (53263:11)
    ├──[➕] enum (53256:11)
    ├──[➕] enum (53257:11)
    ├──[➕] enum (53258:11)
    ├──[➕] enum (53259:11)
    ├──[➕] enum (53260:11)
    ├──[➕] enum (53261:11)
    ├──[➖] enum (53250:11)❌ 
    ├──[➖] enum (53251:11)❌ 
    ├──[➖] enum (53253:11)❌ 
    ├──[➖] enum (53256:11)❌ 
    ├──[➖] enum (53245:11)❌ 
    ├──[➖] enum (53247:11)❌ 
    ├──[➖] enum (53252:11)❌ 
    ├──[➖] enum (53254:11)❌ 
    ├──[➖] enum (53242:11)❌ 
    ├──[➖] enum (53243:11)❌ 
    ├──[➖] enum (53244:11)❌ 
    ├──[➖] enum (53249:11)❌ 
    ├──[➖] enum (53240:11)❌ 
    ├──[➖] enum (53241:11)❌ 
    ├──[➖] enum (53255:11)❌ 
    ├──[➖] enum (53246:11)❌ 
    └──[➖] enum (53248:11)❌ 

Document Element	Total Changes	Breaking Changes
paths	2	2
components	27	17

• ❌ BREAKING Changes: 19 out of 29
• Removals: 17
• Additions: 12
• Breaking Removals: 17
• Breaking Additions: 2

Report

The full API changes report is available at: https://github.com/opensearch-project/opensearch-api-specification/actions/runs/11254952792/artifacts/2034754201

API Coverage

	Before	After	Δ
Covered (%)	588 (57.59 %)	588 (57.59 %)	0 (0 %)
Uncovered (%)	433 (42.41 %)	433 (42.41 %)	0 (0 %)
Unknown	29	29	0

[github-actions]

Spec Test Coverage Analysis

Total	Tested
504	310 (61.51 %)

[dblock]

@Xtansia care to take a look pls?