MNT-19269 CLONE - How to change the default site visibility from public on 5.2.2

The solution Sol-7640 article explains how to set the default site type to Private instead of Public when creating a new site. 
The solution worked perfectly on version 4.2.2 but seems to have no effect on version 5.2.2.

Steps to reproduce

Follow the steps in SOL-7640 and try to create a new site

Expected behavior

Default site type should be set to Private

Observed behavior 

Default site type is set to Public

Analysis to date

The script below contains a variable setting a default website type, I changed to private and nothing happened.

share/WEB-INF/classes/alfresco/site-webscript/org/alfresco/modules/create-site.get.js

I have installed alfresco 5.2.2 OOTB deleted the template 'create-site.get.html.ftl' and can still create a site.