kvm2 driver: Use scsi cdrom for arm64

On linux/aarch64 (e.g. Asahi Linux on MacBook M*) booting from SATA
cdrom is broken and the VM drops into the UEFI shell.

It seems that linux/aarch64 supports only virtio and scsi devices[1].
Replace with scsi cdrom (like the x86 version) and addd a virtio-scsi
controller since the default scsi controller does not boot as well.

[1] https://kubevirt.io/user-guide/virtual_machines/virtual_machines_on_Arm64/#disks-and-volumes

Author: nirs

pkg/drivers/kvm/domain_definition_arm64.go

@@ -49,14 +49,16 @@ const domainTmpl = `
   <devices>
     <disk type='file' device='cdrom'>
       <source file='{{.ISO}}'/>
-      <target dev='sdc' bus='sata'/>
+      <target dev='sdc' bus='scsi'/>
       <readonly/>
     </disk>
     <disk type='file' device='disk'>
       <driver name='qemu' type='raw' cache='default' io='threads' />
       <source file='{{.DiskPath}}'/>
       <target dev='hda' bus='virtio'/>
     </disk>
+    <controller type='scsi' index='0' model='virtio-scsi'>
+    </controller>
     <interface type='network'>
       <source network='{{.PrivateNetwork}}'/>
       <model type='virtio'/>