tripleo-ansible-inventory is broken in Master/Wallaby and need to be revisit
to what tripleo is actually deploying:
* tripleo-deploy directory contains a valid inventory
* tripleo-ansible with the playbook cli-config-download.yaml offers a way to
regenerate a fresh inventory.
This review also removed the scripts/tripleo-validation.py which is not longer functional
with the current VF CLI.
Change-Id: Ie02259336c763cfa980b59ad64f9e478d05690fb
Closes-Bug: #1936406
Resolves: rhbz#2008426
08e2e1a060