The cfnRole role defined in serverless.yml should be used with additional stacks

[brettflorio]

This plugin doesn't use the cfnRole as specified in the serverless.yml. The expected behavior would be for it to deploy with the cfnRole defined in the provider section of the yaml file.

I've taken a look but am not familiar enough with the internals of the Serverless Framework (or plugin architecture) to figure this out and submit a pull request, unfortunately.

[antogyn]

@brettflorio I forked this project to fix this a long time ago but never submitted a PR, if you want to take a look antogyn@c0d2d26