Use focal libvirt image for victoria and wallaby

Change-Id: I70a989aeaac3d763b110cc854e00fa33d5f8861a
Signed-off-by: Andrii Ostapenko <andrii.ostapenko@att.com>

libvirt/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v1.0.0
 description: OpenStack-Helm libvirt
 name: libvirt
-version: 0.1.6
+version: 0.1.7
 home: https://libvirt.org
 sources:
   - https://libvirt.org/git/?p=libvirt.git;a=summary

libvirt/values_overrides/victoria-ubuntu_focal.yaml

@@ -0,0 +1,5 @@
+---
+images:
+  tags:
+    libvirt: docker.io/openstackhelm/libvirt:latest-ubuntu_focal
+...

libvirt/values_overrides/wallaby-ubuntu_focal.yaml

@@ -0,0 +1,5 @@
+---
+images:
+  tags:
+    libvirt: docker.io/openstackhelm/libvirt:latest-ubuntu_focal
+...

releasenotes/notes/libvirt.yaml

@@ -7,4 +7,5 @@ libvirt:
   - 0.1.4 Set unix socket auth method as none
   - 0.1.5 Use full image ref for docker official images
   - 0.1.6 Enhancement to enable probes override from values.yaml
+  - 0.1.7 Add libvirt overrides for Victoria and Wallaby
 ...