Install and configure controller node for Ubuntu in nova

This bug tracker is for errors with the documentation, use the following as a template and remove or add fields as you see fit. Convert [ ] into [x] to check boxes:

- [X] I have a fix to the document that I can paste below including example: input and output.

https://docs.openstack.org/nova/yoga/install/controller-install-ubuntu.html

***** BEFORE

[service_user]
...
auth_url = https://controller/identity
...

***** AFTER

[service_user]
...
auth_url = http://controller:5000/identity
...

-----------------------------------
Release: 25.2.2.dev1 on 2023-02-15 22:37:40
SHA: fd0d336ab5be71917ef9bd94dda51774a697eca8
Source: https://opendev.org/openstack/nova/src/doc/source/install/controller-install-ubuntu.rst
URL: https://docs.openstack.org/nova/yoga/install/controller-install-ubuntu.html