Use vfio-pci instead of pci-assign for SR-IOV devices.

[jellonek]

This change is 

[ivan4th]

Review status: 0 of 12 files reviewed at latest revision, all discussions resolved.

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images/image_skel/libvirt.sh, line 22 at r1 (raw file):

    ls -l /sys/class/net/*/device/iommu_group | sed -e "s/.*\//    \"\/dev\/vfio\//" -e "s/\$/\",/"
    tail -n +$((marker_line+1)) /etc/libvirt/qemu.conf.tmpl
  } >/etc/libvirt/qemu.conf

just use # @DEVS@ in qemu.conf instead of using the template file and marker line
then just

files=$(ls /sys/class/net/*/device/iommu_group | sed 's@\(.*\)@/dev/vfio/\1,@')
sed -i "s/.*\(# @DEVS@\)/${files} /dev/vfio/vfio \1/" /etc/libvirt/qemu.conf

pls verify if it works this way, it would be simpler

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Comments from Reviewable

[ivan4th]

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Reviewed 10 of 12 files at r1, 2 of 3 files at r2.
Review status: all files reviewed at latest revision, 1 unresolved discussion.

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Comments from Reviewable

[pigmej]

Reviewed 10 of 12 files at r1, 2 of 3 files at r2.
Review status: all files reviewed at latest revision, 1 unresolved discussion.

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[pigmej]

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Review status: all files reviewed at latest revision, 1 unresolved discussion.

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Comments from Reviewable

[pigmej]

Review status: all files reviewed at latest revision, 1 unresolved discussion, some commit checks pending.

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a discussion (no related file):
Seems that there is some error during e2e, removing my lgtm

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Comments from Reviewable

[pigmej]

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Reviewed 1 of 1 files at r3.
Review status: all files reviewed at latest revision, 2 unresolved discussions.

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Comments from Reviewable

[ivan4th]

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Review status: all files reviewed at latest revision, 1 unresolved discussion.

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Comments from Reviewable