Changing configuration template to be able to source a parent template

The value was overwriting the desired template name, and according to the docs ( http://docs.aws.amazon.com/elasticbeanstalk/latest/api/API_CreateConfigurationTemplate.html ) the SourceConfiguration needs to be of type SourceConfiguration ( http://docs.aws.amazon.com/elasticbeanstalk/latest/api/API_SourceConfiguration.html ).