fix(ecs): reduce ecs service task role cloudwatch permissions when no log configured (under feature flag)

[GavinZZ]

Issue # (if applicable)

Closes https://github.com/aws/aws-cdk/issues/31397

Reason for this change

If a FargateService or EC2 Service has enableExecuteCommand: true and the ECS cluster it runs on has executeCommandConfiguration.logging set to anything but ecs.ExecuteCommandLogging.NONE then the CDK automatically grants the underlying TaskDefinition overly broad cloudwatch logs permissions regardless of need even if the logging configuration has no cloudwatch logs config set.

This is not right behaviour as these permissions are not needed.

Description of changes

Add feature flag and if feature flag is on and cloudwatch log is configured, reduce the permissions.

Description of how you validated changes

New unit tests, integration tests.

Checklist

• [x] My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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

[mergify[bot]]

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: 9ff67bc539ce70339a93a2b3a6ab953290f3d441
• Result: SUCCEEDED
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[mergify[bot]]

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).

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