COS AWS: Workflow Regression: model_name vs. model_uuid

The abstracted e2e workflow (`just apply` / `just destroy`) is currently broken. The workflow previously piped the `model_name` from the infrastructure output into the COS Terraform configuration.

## Issue:
The updated COS Terraform provider has introduced a breaking change: it no longer accepts a `model_name`, but rather a `model_uuid`. So, the just apply automation fails during the second stage (COS Apply)

Either:
- Implement a hacky workaround to output the model uuid
- just deprecate the just file automation and treat the COS on AWS as a 2-step process