wrong template variable used

when sending admin user confirmation email, the code is in _org.usergrid.management.cassandra.ManagementServiceImpl#sendAdminUserConfirmationEmail_ 

```
sendAdminUserEmail(
        user,
        "User Account Confirmation: " + user.getEmail(),
        emailMsg(hashMap("user_email", user.getEmail()).map("confirmation_url", confirmation_url),
            PROPERTIES_EMAIL_ADMIN_CONFIRMATION));
```

but the template variable in property _usergrid.management.email.admin-confirmation_ is **confirm_email**