MicroBoshDeploymentManifest directly uses Bosh::Aws::MicroboshManifest

Previously it relied on this class by shelling out to "bosh aws"

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
Signed-off-by: Matthew Boedicker <mboedicker@pivotallabs.com>
Introducing AWS microbosh deployment cleaner for BAT

Signed-off-by: Jeffrey Peckham <peckham@pivotallabs.com>
Clean up vms from previous test run before BATs

- Only implemented for AWS
- Uses stubbed cleaners for Vsphere and Openstack

Signed-off-by: Jeffrey Peckham <peckham@pivotallabs.com>