- "instance_name", "mem", "vcpus", "ip", "bridge", "mac",
- "kernel_path", "initrd_path", "hvm_boot_order", "hvm_acpi",
- "hvm_pae", "hvm_cdrom_image_path", "vnc_bind_address"
+ "instance_name", "ip", "bridge", "mac",
+ "hvparams", "beparams", "force",