Plan a dry run of ray deployment

Between versions 0.8.4 and versions greater than 0.8.6, the “ARN” configuration in the YAML files has changed. I was trying to bump up our ray version, and I caught this error in the deployment.

It would be really cool to have something that would perform a dry run - mirror all steps of an actual deployment/parsing and validating configurations - without an actual deployment. Something like how Terraform has a terraform plan that executes what it would do and recommend changes.