* Add note regarding terraform cloud execution mode
When configuring a workspace in Terraform Cloud, the execution mode defaults to "Remote". This is problematic for two reasons:
1. We use local files that are not in the terraform plan directory. This creates errors about being unable to local files where it is not immediately obvious why.
2. The remote (cloud) runner won't be able to access the kube cluster running on the internal network anyway, so any plan application will fail.
* Detail terraform cloud workspace setup
