Update Rancher PAYG integration sections to Rancher 2.8.4

[jeremy-moffitt]

Related Issues

Summary

The Rancher public cloud offerings detailed in https://ranchermanager.docs.rancher.com/v2.7/integrations-in-rancher/cloud-marketplace/cloud-marketplace-payg-integration are now based on Rancher 2.8.4.

It's possible some customers are still running 2.7.11, so its debatable whether these sections should continue to exist in the 2.7 branch.

The "Cloud Marketplace Pay-as-you-go (PAYG) Integration" should be added to the 2.8 docs (this section is not currently present in the 2.8 "Integrations in Rancher" section, subsection "Cloud Marketplace Integration"), and the "limitations" should be updated to something along the lines of "New PAYG installs must be Rancher 2.8.4. Existing installs with previously supported versions remain in support but may be upgraded to 2.8.4 as the listings have been updated."

[jeremy-moffitt]

@LucasSaintarbor any information you need to make progress on this? How can we help?

[jeremy-moffitt]

@LucasSaintarbor it's been a couple months on this, anything you need from the engineering team?
The AWS PAYG offering is up to the 2.9.1 release now
The Azure PAYG offering remains on 2.8.4