support managing of multiple disks in ovirt
fixes #1574 - ovirt - add remove and show volumes
- volume and interface ordering is now working
- removed include blank because it is a duplicate of the Blank ovirt-template.
- bootable is disabled when editing a vm, because currently I don't handle volume updates. just add and remove of a volume.
- Volumes are created in the order that they where created in the gui. Bootable is set by default to the first volume.
- update to the latest rbovirt gem.