Install and configure controller node (nova) missing packet

[Sebastian]

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] This doc is inaccurate in this way:
# in section "Install & configure components" -> chapter 1
the packet "openstack-nova-console" is missing.

I am installing Openstack Stein on CentOS 7

- [ ] This is a doc addition request.
- [x] I have a fix to the document that I can paste below including example: input and output.

Input:
# yum install openstack-nova-api openstack-nova-conductor \
  openstack-nova-novncproxy openstack-nova-scheduler

output:
# yum install openstack-nova-api openstack-nova-conductor \
  openstack-nova-novncproxy openstack-nova-scheduler \
  openstack-nova-console

If you have a troubleshooting or support issue, use the following resources:

 - Ask OpenStack: http://ask.openstack.org
 - The mailing list: http://lists.openstack.org
 - IRC: 'openstack' channel on Freenode

-----------------------------------
Release: on 2019-03-27 10:24:01
SHA: b54c11dedad79ec18ccd6009c67a1d8a94627dde
Source: https://git.openstack.org/cgit/openstack/nova/tree/doc/source/install/controller-install-rdo.rst
URL: https://docs.openstack.org/nova/stein/install/controller-install-rdo.html

[Matt Riedemann (mriedem)]

The nova-console service is xen driver specific and removed on purpose because it's deprecated, see:

https://review.opendev.org/#/c/610075/