Update subnet to reflect DMZ and Web (later to add App and DB subnets)
Modify components name (Application is listed as part of the Stack attribute)
Multi tier template copied from Amazon https://s3.amazonaws.com/cloudformation-templates-us-east-1/multi-tier-web-app-in-vpc.template
(link in http://aws.amazon.com/cloudformation/aws-cloudformation-templates/)
Modify instance types and Add MySQL RDS Instance
Add MySQL DB