Fixup: windows2016.json old syntax for CPU and RAM allocation for QEMU fixup

Packer/windows_2016.json

@@ -15,14 +15,14 @@
       "winrm_timeout": "4h",
       "shutdown_command": "shutdown /s /t 10 /f /d p:4:1 /c \"Packer Shutdown\"",
 
-      "cpus": "2",
-      "memory": "2048",
       "accelerator": "kvm",
       "disk_size": "{{user `disk_size`}}",
 
       "output_directory": "{{ user `packer_build_dir`}}",
 
       "qemuargs": [
+	[ "-m", "2048"],
+	[ "-smp", "2"],
         [ "-drive", "file={{ user `virtio_win_iso` }},media=cdrom,index=3" ],
 	[ "-drive", "file={{ user `packer_build_dir`}}/{{ .Name }},if=virtio,cache=writeback,discard=ignore,format=qcow2,index=1" ]
 	],