use code.google.com/p/gosshold/ssh

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 FEATURES:
 
+* **New builder:** `null` - The null builder does not produce any
+  artifacts, but is useful for debugging provisioning scripts. [GH-970]
 * **New provisioner:** `chef-client` - Provision using a the `chef-client`
   command, which talks to a Chef Server. [GH-855]
 * **New provisioner:** `puppet-server` - Provision using Puppet by

builder/null/ssh.go

 package null
 
 import (
-	gossh "code.google.com/p/go.crypto/ssh"
+	gossh "code.google.com/p/gosshold/ssh"
 	"fmt"
 	"github.com/mitchellh/multistep"
 	"github.com/mitchellh/packer/communicator/ssh"