write json to a more suitable directory

slapos/recipe/packer/template/packer_run.in

@@ -25,6 +25,7 @@ build["disk_type"] = '%(disk-type)s'
 build["hostname"] = '%(packer-hostname)s'
 build["domain"] = '%(packer-domain)s'
 
+instance_dir = '%(instance-dir)s'
 socket_path = '%(socket-path)s'
 nbd_list = (('%(nbd-host)s', %(nbd-port)s), ('%(nbd2-host)s', %(nbd2-port)s))
 disk_path = '%(disk-path)s'
@@ -104,7 +105,7 @@ def getSocketStatus(host, port):
 def gen_packer_json(build):
   import json
   packer_json = {"builders": [build]}
-  with open("packer.json", 'w') as outfile:
+  with open(instance_dir + "packer.json", 'w') as outfile:
     json.dump(packer_json, outfile)
 
 

software/packer/instance.cfg.in

@@ -78,6 +78,7 @@ recipe = slapos.cookbook:packer
 
 vnc-passwd = $${gen-passwd:passwd}
 
+instance-dir = ${buildout:directory}
 ipv4 = $${slap-parameter:ipv4-random}
 ipv6 = $${slap-parameter:ipv6-random}
 vnc-ip = $${:ipv4}