Provide bin/auth ldap for LDAP diagnostics

Summary: Ref T1536.

Test Plan: Ran `bin/auth ldap`.

Reviewers: mbishopim3, chad

Reviewed By: mbishopim3

CC: aran

Maniphest Tasks: T1536

Differential Revision: https://secure.phabricator.com/D6218

scripts/setup/manage_auth.php

@@ -15,7 +15,8 @@ EOSYNOPSIS
 $args->parseStandardArguments();
 
 $workflows = array(
-  new PhabricatorAuthManagementListWorkflow(),
+  new PhabricatorAuthManagementRecoverWorkflow(),
+  new PhabricatorAuthManagementLDAPWorkflow(),
   new PhutilHelpArgumentWorkflow(),
 );