fix sg_name bug

Author: Gabriel Monroy

api/models.py

@@ -536,7 +536,7 @@ def launch(self, *args, **kwargs):
     def _prepare_launch_args(self):
         creds = self.layer.flavor.provider.creds.copy()
         params = self.layer.flavor.params.copy()
-        params['formation'] = self.formation.id
+        params['layer'] = "{0}-{1}".format(self.formation.id, self.layer.id)
         params['id'] = self.id
         init = self.layer.flavor.init.copy()
         if settings.CHEF_ENABLED:

celerytasks/ec2.py

@@ -56,7 +56,7 @@ def launch_node(node_id, creds, params, init, ssh_username, ssh_private_key):
     conn = create_ec2_connection(
         region, creds['access_key'], creds['secret_key'])
     # find or create the security group for this formation
-    sg_name = params['formation']
+    sg_name = params['layer']
     sg = conn.get_all_security_groups(sg_name)[0]
     # add the security group to the list
     params.setdefault('security_groups', []).append(sg.name)