Is it possible to add new types of instances by modifying the template available at https://s3.amazonaws.com/awsmp-fulfillment-cf-templates-prod/42f67df5-e57c-4db2-b31a-6723f002b99d.a036bb32-73f2-4c92-9dfa-24296ff5cb50.template? In particular, I would like to add r5 instances. I have tried to replicate all r4 entries in the template, but still get an error when trying to use them:
The instance configuration for this AWS Marketplace product is not supported. Please see the AWS Marketplace site for more information about supported instance types, regions, and operating systems. (Service: AmazonEC2; Status Code: 400; Error Code: UnsupportedOperation; Request ID: 13a03970-5b74-4996-a306-1c9e41640774)
Is it still possible to add a new instance type by modifying something else (as a user)?