This change replaces the call to grub2-switch-to-blscfg with a file
rename to update it to the actual machine-id.
grub2-switch-to-blscfg has issues in some build environments:
- When the build host is EFI boot, it assumes the image is, and
fails when config file /etc/grub2-efi.cfg is missing
- With recent cento9 images and a fedora build host it fails with:
grub2-probe: error: cannot find a device for / (is /dev mounted?)
Change-Id: I74ad800b702f2b491d958555cef8d7c7f63d74ac
Per the bug mentioned upstream, grub2-mkconfig will currently not set
the kernel options for BLS entries prefixed with a machine-id
different to the running system.
This affects the centos element, as the upstream .qcow2 comes with a
pre-existing BLS entry but a blank machine-id. This only affects
9-stream -- prior releases either don't use BLS or have entries
configured to use a common variable from grubenv which is updated
correctly.
We currently can not end-to-end test this in OpenDev because we run
our functional tests on Ubuntu Focal (they use devstack), whose kernel
can not read the XFS format on the 9-stream .qcow2. This expands the
functional tests (that run on Debian Buster, with a later kernel) to
add the vm element, so the bootloader path is exercised (this requires
a block-device too). This at least runs the bootloader install, we
can confirm the kernel options look right from the dumping provided
the logs.
Change-Id: I327f5e7a95e47905c01138c8c4483f3f03e8efff
