ansible: rebrand test-osuosl-aix715-ppc64-[3,4]

[aixtools]

as test-osuosl-aix72-ppc64-[3,4]

Checklist

• commit message has one of the standard prefixes
• faq.md updated if appropriate
• other documentation is changed or added (if applicable)
• playbook changes run through VPC or QPC (if you have access)
• VPC/QPC not applicable for this PR
• for inventory.yml changes, bastillion/nagios/jenkins updated accordingly

[sxa]

Noting that Bastillion cannot currently connect to the new systems but that is potentially related to the algorithms in use (Since I can't connect from my laptop either but that's less of a problem than Bastillion) so will likely need remediation in the future.

I'm testing the new systems via:

• JDK17 AQA pipeline on -3
• JDK20 AQA pipeline on -4

@aixtools would you be able to amend the commit to have inventory: instead of ansible: at the start? Should just be a case of running this from the place you did the change:

git commit --amend -m "ansible: rebrand test-osuosl-aix715-ppc64-[3,4]"
git push -f origin aixinv02