How to change OpenShift console URL and API URL
We have solved this issue. What we had to do is to change the URL-s defined in the variables in the inventory file and then we executed the ANSIBLE playbook to update master configuration. The process of running that playbook is describe in the official documentation.
After that we also had to update the OpenShift Web Console configuration map with new URL-s and then scale down and scale up the web-console deployment. The process on how to update the configuration of the web-console is described here.