Remove unused overrides and update default image

This change updates the default libvirt image value and removes
several unused values overrides for the libvirt chart.

Change-Id: I0a0b81de017f33c2cabf5311f5288c8f46191d8b

libvirt/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v1.0.0
 description: OpenStack-Helm libvirt
 name: libvirt
-version: 0.1.10
+version: 0.1.11
 home: https://libvirt.org
 sources:
   - https://libvirt.org/git/?p=libvirt.git;a=summary

libvirt/values.yaml

@@ -26,7 +26,7 @@ labels:
 
 images:
   tags:
-    libvirt: docker.io/openstackhelm/libvirt:latest-ubuntu_bionic
+    libvirt: docker.io/openstackhelm/libvirt:latest-ubuntu_focal
     ceph_config_helper: 'docker.io/openstackhelm/ceph-config-helper:ubuntu_bionic-20200217'
     dep_check: quay.io/airshipit/kubernetes-entrypoint:v1.0.0
     image_repo_sync: docker.io/library/docker:17.07.0

libvirt/values_overrides/ocata-ubuntu_xenial.yaml

@@ -1,5 +0,0 @@
----
-images:
-  tags:
-    libvirt: docker.io/openstackhelm/libvirt:ubuntu_xenial-20190903
-...

libvirt/values_overrides/pike-ubuntu_xenial.yaml

@@ -1,5 +0,0 @@
----
-images:
-  tags:
-    libvirt: docker.io/openstackhelm/libvirt:ubuntu_xenial-20190903
-...

libvirt/values_overrides/queens-ubuntu_xenial.yaml

@@ -1,5 +0,0 @@
----
-images:
-  tags:
-    libvirt: docker.io/openstackhelm/libvirt:ubuntu_xenial-20190903
-...

libvirt/values_overrides/rocky-opensuse_15.yaml

@@ -1,5 +0,0 @@
----
-images:
-  tags:
-    libvirt: docker.io/openstackhelm/libvirt:latest-opensuse_15
-...

libvirt/values_overrides/rocky-ubuntu_xenial.yaml

@@ -1,5 +0,0 @@
----
-images:
-  tags:
-    libvirt: docker.io/openstackhelm/libvirt:ubuntu_xenial-20190903
-...

libvirt/values_overrides/victoria-ubuntu_focal.yaml

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

libvirt/values_overrides/wallaby-ubuntu_focal.yaml

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

releasenotes/notes/libvirt.yaml

@@ -11,4 +11,5 @@ libvirt:
   - 0.1.8 Update htk requirements
   - 0.1.9 Exec libvirt instead of forking from bash
   - 0.1.10 Enable taint toleration for Openstack services jobs
+  - 0.1.11 Remove unused overrides and update default image
 ...