Changes to support installing the devkit on linux/s390x build images

[sxa]

Just noticed that this has not yet been merged - the jobs that use it are currently configured to run from this branch.

Checklist

• [ ] commit message has one of the standard prefixes
• [x] faq.md updated if appropriate
• [x] other documentation is changed or added (if applicable)
• [ ] playbook changes run through VPC or QPC (if you have access) https://ci.adoptium.net/view/Tooling/job/VagrantPlaybookCheck/1885/
• [ ] VPC/QPC not applicable for this PR
• [ ] for inventory.yml changes, bastillion/nagios/jenkins updated accordingly