remove pretty iam role name, let CloudFormation generate name

[tongueroo]

• Let CloudFormation generate IAM role names. This addresses really long controller names. Also addresses cross-region deploys.
• As a part of this fixed long Lambda function names also.
• Added function description to Lambda functions.

This is a 🐞 bug fix.

• I've added tests (if it's a bug, feature or enhancement)
• I've adjusted the documentation (if it's a feature or enhancement)
• The test suite passes (run bundle exec rspec to verify this)

Summary

Remove pretty IAM role names. Do not assign pretty role_name because long controller names might hit the 64-char. limit. Also, IAM roles are global, so assigning role names prevents cross region deploys.

Context

#160

Version Changes