vm: no empty floppy/cdrom drives

slapos/recipe/vm.py

@@ -125,6 +125,7 @@ class BaseRecipe(EnvironMixin):
     args = ['qemu-system-' + ARCH, '-enable-kvm', '-drive', drive,
             '-smp', self.options.get('smp', '1'), '-m', str(mem),
             '-net', 'nic,model=virtio', '-net', net,
+            '-nodefaults', '-vga', 'std',
             # https://daniel-lange.com/archives/152-hello-buster.html
             '-object', 'rng-random,filename=/dev/urandom,id=rng0',
             '-device', 'virtio-rng-pci,rng=rng0']