fixes more issues, this is incrmental, as I'm fixing them based on errors :)

slapos/recipe/packer/template/packer_run.in

@@ -141,7 +141,7 @@ if smp_options:
 
 kvm_argument_list += [
   ['-enable-kvm'], ['-smp', smp], ['-m', ram_size], 
-  ['-drive', 'file=%%s,if=%%s' %% (disk_path, build.get(disk_type))],
+  ['-drive', 'file=%%s,if=%%s' %% (disk_path, build["disk_type"])],
   ['-vnc', '%%s:1,ipv4,password' %% listen_ip],
   ['-boot', 'order=cd,menu=on'],
   ['-qmp', 'unix:%%s,server' %% socket_path],

software/packer/instance.cfg.in

@@ -70,7 +70,7 @@ extra-context =
 [packer-configuration]
 packer-environment = ${buildout:parts-directory}/qemu/bin/ 
 packer-build-command = 
-  ${buildout:parts-directory}/packer/packer build -debug -color=false ${buildout:parts-directory}/packer.json  > testing.log
+  ${buildout:parts-directory}/packer/packer build -debug -color=false ${buildout:directory}/packer.json  > testing.log
 
 
 [packer-instance]