Update CHANGELOG

CHANGELOG.md

@@ -27,6 +27,7 @@ IMPROVEMENTS:
     with `-no-parallel`. [GH-924]
   * post-processors/vsphere: `disk_mode` option. [GH-778]
   * provisioner/ansible: Add `inventory_file` option [GH-1006]
+  * provisioner/chef-client: Add `validation_client_name` option. [GH-1056]
 
 BUG FIXES:
 

website/source/docs/provisioners/chef-client.html.markdown

@@ -82,6 +82,10 @@ since it will allow the provisioner to clean up the node/client.
   this folder. If the permissions are not correct, use a shell provisioner
   prior to this to configure it properly.
 
+* `validation_client_name` (string) - Name of the validation client. If
+  not set, this won't be set in the configuration and the default that Chef
+  uses will be used.
+
 * `validation_key_path` (string) - Path to the validation key for communicating
   with the Chef Server. This will be uploaded to the remote machine. If this
   is NOT set, then it is your responsibility via other means (shell provisioner,