AWS cli documentation change
Summary
Renamed and repurposed from OpsWorks register-ecs-cluster to EC2 delete-image-usage-report command. Changed content to document deletion of image usage reports with added --dry-run parameter.
Security assessment
The change introduces a new command for deleting image usage reports but contains no references to security vulnerabilities or explicit security controls. The --dry-run parameter is a standard AWS CLI feature for permission checks, not a security-specific enhancement.