Project: springxd
Issue XD-1130: Update the EC2 deployer 
EC2 Deployer Needs to change its configuration behavior to use environment variables vs. the property files * Remove ConfigureSystem class, since we will use environment variables instead * Allow users to set environment variables via the xd-ec2 properties. * If properties are not present use those that are available in the application.yml * Utilize JClouds environment variable setup features to implement this behavior.
Story points: 5