Allow start of libvirt with sriov_enabled on node without sriov

[jellonek]

Virtlet configmap is common for all nodes, so if different nodes have different hardware we should allow to start Virtlet with set sriov_enabled to non empty value in this config map even if there is missing hardware supporting SR-IOV.

Without this patch - regenerate_qemu_conf will fail because of ls can't find such entry in sysfs.

---

This change is 

[ivan4th]

Review status: 0 of 1 files reviewed at latest revision, all discussions resolved.

---

images/image_skel/libvirt.sh, line 17 at r1 (raw file):

function regenerate_qemu_conf() {
  if ls -l /sys/class/net/*/device/iommu_group >/dev/null 2>&1 ; then

why -l here? the output goes to /dev/null...

---

Comments from Reviewable

[jellonek]

Review status: 0 of 1 files reviewed at latest revision, 1 unresolved discussion.

---

images/image_skel/libvirt.sh, line 17 at r1 (raw file):

Previously, ivan4th (Ivan Shvedunov) wrote…

why -l here? the output goes to /dev/null...

Good catch! Done.

---

Comments from Reviewable

[pigmej]

---

Reviewed 1 of 1 files at r2.
Review status: all files reviewed at latest revision, 1 unresolved discussion.

---

Comments from Reviewable

[lukaszo]

---

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

---

Comments from Reviewable

[ivan4th]

---

Review status: all files reviewed at latest revision, all discussions resolved, all commit checks successful.

---

Comments from Reviewable