Review the presentation of AZ and cell concepts

[flozanorht]

AZ was a bad name. It's basically nova only and do not produce a failure domain, by itself. See slack discussion at
https://redhat-internal.slack.com/archives/C0YDMFY2G/p1714411844090559?thread_ts=1713999141.099059&cid=C0YDMFY2G

sean-k-mooney
sure but if you were doing a certifcation examp and the question was what is a nova AZ. then you shoudl recive 0 marks for sayign its a fault domain
(...)
if you say "its a nova api constract that allows you to group hosts for schdulign to enable uscases such as locality, or fault domains." then you get full marks
(...)
on thing to conserd is there is not expctation that a Nova AZ maps to the same set of host as a cidner or neutron AZ

[flozanorht]

Maybe use the wording from Greg Procunier on the same thread

Greg Procunier
Sean, does the nova/compute team have a reference or abstract that captures what you have been speaking of from the perspective is "this is a highly resilient deployment (from the perspective of compute)"
Greg Procunier
with the understanding of fault resilient != fault tolerant (edited)