The rhel8.2 .qcow2 images have moved from a single xfs partition into
an EFI style layout with separate /boot/efi partition.
This means the root partition has /boot/grub2/grubenv as a symlink to
../efi/EFI/redhat/grubenv, which is dangling when we are running the
bootloader element as /boot/efi is blank. grub-install tries to call
rename() in the process of re-writing this file, which fails and bails
out dib.
Remove this symlink if it exists
Change-Id: I5591144a3617dbae148b0c5d2a6a404942ffcd4e
Parital-Bug: #1893029
Redhat-Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1871669
8f12d9530e