Cognito User/Identity Pools as serverless.yml resource defs

[nerdguru]

FYI, just got confirmation that this is a bug that will be fixed as part of a larger ARN issue, workaround described here:

Global arn parser with intrinsic functions (Ref, Fn::GetAtt, Fn::ImportValue, ...) support

Basically, create your stack once, come back to your serverless.yml and hard code the ARN that gets generated.