There is no real reason we should be using some of the
terms we do, they're outdated, and we're behind other
open-source projects in this respect. Let's switch to
using more inclusive terms in all possible places.
Updated playbooks and related code accordingly.
Change-Id: Ia471193921660aa5f2152ab63eaf570bee3ebcd0
Depends-on: https://review.opendev.org/c/openstack/requirements/+/917786
8da1051e0b