Role titles with non-alphanumeric values

Troposphere is awesome! Thank you everyone for working on it.

I was able to create a Role with title value containing "-" i.e. alphanumeric. This passes troposphere validation, but fails when running the template. Has anyone else seen this behavior?

Reproduce the reported case by creating a Role with a title containing a hyphen and validating the generated template. Compare Troposphere's validation result with the CloudFormation failure; done means the behavior is documented or the validation and deployment outcomes are brought into agreement.

Written by the indexing model from the issue text.