Description of problem:
Virt-v2v has no UEFI fix rule for debian UEFI guest

Version-Release number of selected component (if applicable):
virt-v2v-1.44.0-1.el9.1.x86_64
libguestfs-1.45.5-1.el9.x86_64
nbdkit-1.25.7-1.el9.x86_64
libvirt-client-7.0.0-6.el9.x86_64
qemu-kvm-6.0.0-2.el9.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Convert debian UEFI guest from VMware to rhv4.4 by v2v

1. virt-v2v -ic vpx://root@10.73.198.169/data/10.73.199.217/?no_verify=1 -it vddk -io vddk-libdir=/home/vddk7.0 -io vddk-thumbprint=B5:52:1F:B4:21:09:45:24:51:32:56:F6:63:6A:93:5D:54:08:2D:78 -ip /home/passwd -o rhv-upload -oo rhv-direct -oc https://dell-per740-22.lab.eng.pek2.redhat.com/ovirt-engine/api -op /home/rhvpasswd -of raw -os nfs_data -b ovirtmgmt esx7.0-debian10.9.0-x64-uefi
   [ 1.0] Opening the source -i libvirt -ic vpx://root@10.73.198.169/data/10.73.199.217/?no_verify=1 esx7.0-debian10.9.0-x64-uefi -it vddk -io vddk-libdir=/home/vddk7.0 -io vddk-thumbprint=B5:52:1F:B4:21:09:45:24:51:32:56:F6:63:6A:93:5D:54:08:2D:78
   [ 2.7] Creating an overlay to protect the source from being modified
   [ 3.5] Opening the overlay
   [ 10.5] Inspecting the overlay
   [ 18.0] Checking for sufficient free disk space in the guest
   [ 18.0] Estimating space required on target for each disk
   [ 18.1] Converting 10.9 to run on KVM
   virt-v2v: warning: could not determine a way to update the configuration of
   Grub2
   virt-v2v: Fixing UEFI bootloader.
   virt-v2v: No UEFI fix rule for debian 10
   virt-v2v: Can't fix UEFI bootloader. VM may not boot.
   virt-v2v: This guest has virtio drivers installed.
   [ 61.6] Mapping filesystem data to avoid copying unused and blank areas
   [ 63.6] Closing the overlay
   [ 63.9] Assigning disks to buses
   [ 63.9] Checking if the guest needs BIOS or UEFI to boot
   virt-v2v: This guest requires UEFI on the target to boot.
   [ 63.9] Initializing the target -o rhv-upload -oc https://dell-per740-22.lab.eng.pek2.redhat.com/ovirt-engine/api -op /home/rhvpasswd -os nfs_data
   [ 65.4] Copying disk 1/1 to qemu URI json: { "file.driver": "nbd", "file.path": "/tmp/v2vnbdkit.mfej8f/nbdkit4.sock", "file.export": "/" }

   (raw)
   (100.00/100%)
   [ 452.1] Creating output metadata
   [ 453.2] Finishing off

2.Power on guest on rhv after v2v conversion, guset can't boot into OS, please refer to screenshot'debian10.9.0-uefi-guest-cannot-boot-os-after-v2v.png'

Actual results:
As above description

Expected results:
Debian UEFI can boot into OS normally after v2v conversion

Additional info: