There are several bootstrap methods for cloudformations:
1. Create image with application ready to go
2. Use cloud-init to run a startup script passed as userdata to the nova
server create
3. Use the CloudFormations instance helper scripts
This directory contains files required for choice #3.
cfn-init - Reads the AWS::CloudFormation::Init for the instance resource,
installs packages, and starts services
cfn-signal - Waits for an application to be ready before continuing, ie:
supporting the WaitCondition feature
cfn-hup - Handle updates from the UpdateStack CloudFormations API call
