Updated images provided on 2016-07-25. The major changes to the previous versions are:
- Images include the latest updates from cw29
- cloud-init enablement: Set
preserve_hostname: falseon all images (as the hostname is now coming via metadata and no longer from
- Revert openSUSE42.1 cloud-init preinitialization
- CentOS-6.8 added (upgrade from 6.7).