Install and configure controller node for Red Hat Enterprise Linux and CentOS in nova

[Minsoo Hwang]

Description
===========
Missing steps in nova installation procedure in ussuri.

Steps to reproduce
==================
I followed the installation steps, but starting openstack-nova-scheduler and openstack-nova-conductor services were failed.

Logs
===================
I found below logs from keystone.log
2024-04-13 22:48:07.626 1600 WARNING keystone.server.flask.application [req-08df7ca6-1ef9-4b70-be72-751f28cf7c06 3ecc75f9d27b44149b3f92055bc6424b d2ac0422619145859853e509af85cc2b - default default] Could not find service: placement.: keystone.exception.ServiceNotFound: Could not find service: placement.

Action taken
===================
After I doing below steps, both openstack-nova-scheduler and openstack-nova-conductor services started.
- create placement service user and add admin role in service project
- create placement service & endpoints

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-----------------------------------
Release: on 2019-11-27 17:09:44
SHA: a377953cb68ff2e2418ba93935a753f0abdc648c
Source: https://opendev.org/openstack/nova/src/doc/source/install/controller-install-rdo.rst
URL: https://docs.openstack.org/nova/ussuri/install/controller-install-rdo.html