Adding a charm to the OpenStack ecosystem in charm-guide: Release Tools section is outdated

[Samuel Allan]

- [x] This doc is inaccurate in this way: Release Tools section is outdated, referencing files in the release-tools repository that no longer exist.
- [ ] This is a doc addition request.
- [ ] I have a fix to the document that I can paste below including example: input and output.

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

 - The mailing list: https://lists.openstack.org
 - IRC: 'openstack' channel on OFTC

-----------------------------------
Release: 0.0.1.dev595 on 2022-06-10 16:40:59
SHA: 226b4cbe10f8775897b55558d6e8e6a155605660
Source: https://opendev.org/openstack/charm-guide/src/doc/source/community/software-contrib/adding-a-charm.rst
URL: https://docs.openstack.org/charm-guide/latest/community/software-contrib/adding-a-charm.html

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-guide/+/846831

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Samuel Walladge <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/charm-guide/+/846831
Reason: duplicate of https://review.opendev.org/c/openstack/charm-guide/+/845310/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/charm-guide/+/845310
Committed: https://opendev.org/openstack/charm-guide/commit/46b0791c00e199612cadc1372b6e8d620f4a76d8
Submitter: "Zuul (22348)"
Branch: master

commit 46b0791c00e199612cadc1372b6e8d620f4a76d8
Author: Felipe Reyes <email address hidden>
Date: Thu Jun 9 20:50:19 2022 -0400

    Document lp-builder-config.

    When adding a new charm to the OpenStack charms it's no longer required
    to register in the "*.txt" files that used to live in the release-tools
    repository, instead a new entry in the lp-builder-config is required
    now.

    Change-Id: Iefc4ced58823bf70fb2fce72aad843863e526618
    Closes-Bug: #1979251