tripleo-centos-ceph-jewel.repo is not available for stein but listed in install_overcloud.rst

[Daniel King]

Description
===========

The instructions at https://docs.openstack.org/project-deploy-guide/tripleo-docs/latest/deployment/install_overcloud.html list this line which seems to be causing errors:

```
export DIB_YUM_REPO_CONF="$DIB_YUM_REPO_CONF /etc/yum.repos.d/tripleo-centos-ceph-jewel.repo"
```

It appears that the error is simply that additional line in the documentation.

Steps to reproduce
==================

When following the guide as it is written on a new CentOS 7 server and installing Stein, when reaching step https://docs.openstack.org/project-deploy-guide/tripleo-docs/latest/deployment/install_overcloud.html#get-images on step 4, this command is run:

```bash
openstack overcloud image build
```

Actual result
=============
This produces an error message, which includes the following:

http://paste.openstack.org/show/779602/

This can be confirmed with:

http://paste.openstack.org/show/779603/

The command which generates the other repos, `sudo -E tripleo-repos -b stein current ceph`, does not generate `tripleo-centos-ceph-jewel.repo`. Therefore, it seems as if either `tripleo-repos` should generate that file, or that the tripleo-docs simply needs to be updated. As I understand that Jewel is older and Stein should be using Nautilus, and as it could be a simple error from copy and paste, it would seem to me that the problem would be the documentation.

Expected result
===============

If I remove that repository and re-run the command, I do not receive any error:

http://paste.openstack.org/show/779604/

Recommended update
==================

If this assessment is correct, then perhaps the following change should be made to tripleo-docs:

http://paste.openstack.org/show/779605/

Environment
===========
1. Exact version of OpenStack you are running.
Stein
yum install https://trunk.rdoproject.org/centos7/current/python2-tripleo-repos-0.0.1-0.20190925113854.99d252e.el7.noarch.rpm

2. Which storage type did you use?
Ceph

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/685193

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/685193
Committed: https://git.openstack.org/cgit/openstack/tripleo-docs/commit/?id=f28674bc3b1b724a8eb1e208a34fcb97213d17c7
Submitter: Zuul
Branch: master

commit f28674bc3b1b724a8eb1e208a34fcb97213d17c7
Author: Daniel King <email address hidden>
Date: Thu Sep 26 22:09:50 2019 -0400

    Removed references to tripleo-centos-ceph-jewel.repo

    The deployment documentation for deploying the
    under cloud, deploy-guide/source/deployment/install_overcloud.rst,
    contained deployment instructions which added
    /etc/yum.repos.d/tripleo-centos-ceph-jewel.repo to DIB_YUM_REPO_CONF
    in multiple places inside of the Stable Branch section. As
    tripleo-centos-ceph-*.repo is already included above the Stable
    Branch section, which should include all fo the Ceph files, the
    extra lines were unnecessary and were removed.

    Closes-Bug: #1845574
    Change-Id: Id2912920e67dd8dd3841f94bbeaf747f69df6ed7