GetAtt in Outputs not reporting template invalid

[martysweet]

Template

Resources:
  Bucket:
    Type: AWS::S3::Bucket

Outputs:
  DBDNS:
    Description: DNS Name of the DB Instance
    Value: !GetAtt Database.Endpoint.Address

Results in a Valid Template, however Database is not defined in resources, so this template should be invalid.

[martysweet]

This issue is still present in v1.3.4

[RazzM13]

Hi @martysweet, this issue should be fixed in the above PR.