Plugin no longer resolves variables in file fragments in serverless@2.26.0.

[Neal Shail]

variables such as ${self:provider.stage} are no longer resolved in the resulting output file deployed to CloudFormation

see this pull request

[Kevin Sewell]

Thank you for the PR. I have merged and released as version 0.0.11

[Neal Shail]

Thanks Kev! that's very helpful for me!