How to create tripleo-validations development environment

[Gael Chamoulaud]

Description of problem:

TL;DR

1. What does the tripleo-validations developer framework look like?
2. Which document is relevant to a tripleo-validations developer?
3. What is the test/fix cycle for a tripelo-validations developer
4. What is the platform used during this test/fix cycle?

Version-Release number of selected component (if applicable):
master

How reproducible:
N/A - more about documenting steps to develop under tripleo-validations

Steps to Reproduce:
1.
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3.

Actual results:

Expected results:

Additional info:

After following the validation-libs README.rst

https://opendev.org/openstack/validations-libs/src/branch/master/README.rst

I came away with a few questions:

1. What does the tripleo-validations developer framework look like?
2. Which document is relevant to a tripleo-validations developer?
   - I found a few - not sure which one describes (or is meant to) the best document
     for a tripleo-validation developer to follow.
   - TripleO-Validations - https://docs.openstack.org/tripleo-quickstart/latest/validations.html
   - Getting started with TripleO-Quickstart - https://docs.openstack.org/tripleo-quickstart/latest/getting-started.html#a-step-by-step-deployment-with-playbooks
   - newton/readme: TripleO Validations - https://docs.openstack.org/tripleo-validations/newton/readme.html
   - Welcome to tripleo-validations’s documentation! - https://docs.openstack.org/tripleo-validations/latest
   - RedHat: Chapter 14. Using the validation framework
     - https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.0/html/director_installation_and_usage/index
3. What is the test/fix cycle for a tripelo-validations developer
4. What is the platform used during this test/fix cycle?

FYI - I created a work-in-progress document describing a few recommended methods
for the test/fix platform and execution.