sdk: regenerate against the latest api

- to host.install() added ssh related details
- to template added virtio_scsi.enabled
- to vm added virtio_scsi.enabled
- added ability to attach a disk snapshot to the virtual machine
- to File class added 'content' field
- Payload class now reuses Files instead of own List<PayloadFile> collection

Change-Id: Id1705ba21e3ae4b36a3689e566f33bb664a02e02
Signed-off-by: Michael pasternak <mpastern@redhat.com>