fix(opensearch): add I4G to list of OpenSearch nodes not requiring EB…

…S volumes (#31948)

### 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
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

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

packages/@aws-cdk-testing/framework-integ/test/aws-opensearchservice/test/integ.opensearch.ebs.js.snapshot/cdk-integ-opensearch-instance-store.template.json

@@ -0,0 +1,67 @@
+{
+ "Resources": {
+  "Domain66AC69E0": {
+   "Type": "AWS::OpenSearchService::Domain",
+   "Properties": {
+    "ClusterConfig": {
+     "DedicatedMasterEnabled": false,
+     "InstanceCount": 1,
+     "InstanceType": "i4g.large.search",
+     "MultiAZWithStandbyEnabled": false,
+     "ZoneAwarenessEnabled": false
+    },
+    "DomainEndpointOptions": {
+     "EnforceHTTPS": false,
+     "TLSSecurityPolicy": "Policy-Min-TLS-1-0-2019-07"
+    },
+    "EBSOptions": {
+     "EBSEnabled": false
+    },
+    "EncryptionAtRestOptions": {
+     "Enabled": false
+    },
+    "EngineVersion": "OpenSearch_2.5",
+    "LogPublishingOptions": {},
+    "NodeToNodeEncryptionOptions": {
+     "Enabled": false
+    }
+   },
+   "UpdateReplacePolicy": "Delete",
+   "DeletionPolicy": "Delete"
+  }
+ },
+ "Parameters": {
+  "BootstrapVersion": {
+   "Type": "AWS::SSM::Parameter::Value<String>",
+   "Default": "/cdk-bootstrap/hnb659fds/version",
+   "Description": "Version of the CDK Bootstrap resources in this environment, automatically retrieved from SSM Parameter Store. [cdk:skip]"
+  }
+ },
+ "Rules": {
+  "CheckBootstrapVersion": {
+   "Assertions": [
+    {
+     "Assert": {
+      "Fn::Not": [
+       {
+        "Fn::Contains": [
+         [
+          "1",
+          "2",
+          "3",
+          "4",
+          "5"
+         ],
+         {
+          "Ref": "BootstrapVersion"
+         }
+        ]
+       }
+      ]
+     },
+     "AssertDescription": "CDK bootstrap stack version 6 required. Please run 'cdk bootstrap' with a recent version of the CDK CLI."
+    }
+   ]
+  }
+ }
+}