These files are part of a continuous delivery pipeline demo I worked on. 
You can find out more about the topic under the following URL's.

http://blog.codecentric.de/en/2012/04/continuous-delivery-in-the-cloud-part1-overview/

http://blog.codecentric.de/en/2012/05/continuous-delivery-in-the-cloud-part-2-getting-started-with-amazon-ec2/
  
http://blog.codecentric.de/en/2012/05/continuous-delivery-in-the-cloud-part-3-configure-your-continuous-integration-server/

http://blog.codecentric.de/en/2012/05/continuous-delivery-in-the-cloud-part-4-provisioning-your-test-staging-and-production-environments/

http://blog.codecentric.de/en/2012/05/continuous-delivery-in-the-cloud-part-5-configure-your-continuous-delivery-pipeline/

http://blog.codecentric.de/en/2012/06/continuous-delivery-in-the-cloud-part6-create-a-dashboard-of-your-system/