feat(image_to_vm): Add support for uploading vm images

After this I can make production AMI images available for download! :-D
feat(build_ebs_on_ec2): Fetch prod images by version, misc cleanup.

The build host will start generating production ami disk images so to
simplify the next step this script can automatically fetch them from
that location by version. The default sticks with the existing 'master'
versioning scheme. Added logging and turned off -x by default to make
the output log more readable.

Removing the zip_and_ship script since it isn't useful with officially
built disk images and only works with locally built images and a very
particular ec2 host. A different long term automation scheme will have
to be found.
Merge pull request #61 from marineam/vm_upload

Vm upload