(MAINT)(gh-210) series of commits to get beaker smoketest working in ec2

- updates to aws_sdk hypervisor support to correctly use vmhostname, hostname and ip
- additional open ports for ec2 instances
- updates to dsl 'on' method to properly handle additional environment variables
Does this happen? I haven't seen it before. Are we just trying to make sure we express the volume id here? I'm guessing the original exception swallows that information.