fix(opensearch): add I4G to list of OpenSearch nodes not requiring EBS volumes

[aymen-chetoui]

Issue # (if applicable)

Closes #31764

Reason for this change

CDK is failing to deploy OpenSearch with I4G nodes with error message indicating that EBS configuration is required.
However, OpenSearch clusters with I4G nodes use instance store and cannot be configured with EBS storage.

Description of changes

This change adds I4G node type to the list of OpenSearch nodes that does not support EBS volumes in the cluster configuration.

Description of how you validated changes

Added unit tests and run them successfully
Ran integration test on private account

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

---

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[aws-cdk-automation]

The pull request linter has failed. See the aws-cdk-automation comment below for failure reasons. If you believe this pull request should receive an exemption, please comment and provide a justification.

A comment requesting an exemption should contain the text Exemption Request. Additionally, if clarification is needed add Clarification Request to a comment.

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

[sumupitchayan]

Confirming with open search documentation:

The i4g instance types require Elasticsearch 7.9 or later or any version of OpenSearch, and do not support EBS storage volumes.

Thanks for the PR @aymen-chetoui

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 23a9c07
• Result: SUCCEEDED
• Build Logs (available for 30 days)

Powered by github-codebuild-logs, available on the AWS Serverless Application Repository

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

[github-actions]

Comments on closed issues and PRs are hard for our team to see.
If you need help, please open a new issue that references this one.