So I'm not totally sure, but I suspect we're getting the weird failures with the post-install Server DVD tests because we're not cleanly shutting down the VM before uploading the disk image. openSUSE make sure to shut the system down before they upload the disk image.
I'm working on a diff to fix this, by shutting down cleanly when STORE_HDD_1 or PUBLISH_HDD_1 are set.
STORE_HDD_1
PUBLISH_HDD_1
This ticket had assigned some Differential requests: D787
This is done and merged and working. D787 fixed it.
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/quality/os-autoinst-distri-fedora/issues/31
Please continue any further discussion there.