Update Nova images (#744)

* Build nova from StackHPC fork

We need to include some fixes that haven't landed upstream yet.

* Bump nova tag

Includes:
- stackhpc/nova#55
- stackhpc/nova#56

* Add release notes

Author: jovial

etc/kayobe/kolla.yml

@@ -141,6 +141,10 @@ kolla_sources:
     type: git
     location: https://github.com/stackhpc/networking-generic-switch.git
     reference: stackhpc/{{ openstack_release }}
+  nova-base:
+    type: git
+    location: https://github.com/stackhpc/nova.git
+    reference: stackhpc/{{ openstack_release }}
 
 ###############################################################################
 # Kolla image build configuration.

etc/kayobe/kolla/globals.yml

@@ -20,6 +20,7 @@ kayobe_image_tags:
     # with signature: `Missing section footer for 0000:00:01.3/piix4_pm`. Test carefully before bumping.
     centos: yoga-20230718T112646
 
+nova_tag: yoga-20231103T161400
 nova_libvirt_tag: "{% raw %}{{ kayobe_image_tags['nova_libvirt'][kolla_base_distro] | default(nova_tag) }}{% endraw %}"
 
 # These overrides are currently redundant, but are kept because it's not obvious that you need them if setting haproxy_tag

releasenotes/notes/fix-live-migration-issue-with-cgroups-v2-7029342c4dc15306.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes an issue when live migrating instances to hosts with cgroups v2
+    enabled (Ubuntu Jammy and Rocky 9). See 
+    `Nova bug report <https://bugs.launchpad.net/nova/+bug/1978489>`__.

releasenotes/notes/fix-race-condition-with-ironic-provisioning-aae13d79c9429bf2.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes a race condition when launching multiple Ironic instances
+    in parallel (as is commonly triggered when using Terraform/OpenTofu).
+    See `Nova bug report <https://bugs.launchpad.net/nova/+bug/1974070>`__.