CI: Test seed VM with distribution cloud images

Seed VM deployment testing was limited to the use of cirros images.

Introduce jobs using distribution cloud images (e.g. GenericCloud) to
test more realistic seed VM deployment scenarios. These jobs are in the
experimental queue to avoid downloading large images on every change.

Note that the Ubuntu Noble job is failing: the VM boots but is not able
to get an IP address.

Change-Id: I834259e7eeb6443cb0689997909d093e85decee6
Signed-off-by: Pierre Riteau <[email protected]>
(cherry picked from commit f951d7e)

Author: priteau

playbooks/kayobe-seed-vm-base/overrides.yml.j2

@@ -34,9 +34,11 @@ seed_vm_vcpus: 1
 # Reduce the memory footprint of the seed VM.
 seed_vm_memory_mb: "{{ 1 * 1024 }}"
 
-# Use cirros rather than CentOS for the VM.
+{% if seed_vm_use_cirros | default(true) %}
+# Use cirros rather than distribution cloud image for the VM.
 seed_bootstrap_user: cirros
 seed_vm_root_image: /opt/cache/files/cirros-0.5.3-x86_64-disk.img
+{% endif %}
 
 {% if seed_vm_boot_firmware is defined %}
 seed_vm_boot_firmware: "{{ seed_vm_boot_firmware }}"

zuul.d/jobs.yaml

@@ -394,6 +394,29 @@
     vars:
       kayobe_control_host_become: false
 
+- job:
+    name: kayobe-seed-vm-centos9s-cloud-image
+    parent: kayobe-seed-vm-base
+    nodeset: kayobe-centos9s
+    voting: false
+    vars:
+      seed_vm_use_cirros: false
+
+- job:
+    name: kayobe-seed-vm-rocky9-cloud-image
+    parent: kayobe-seed-vm-base
+    nodeset: kayobe-rocky9
+    vars:
+      seed_vm_use_cirros: false
+
+- job:
+    name: kayobe-seed-vm-ubuntu-noble-cloud-image
+    parent: kayobe-seed-vm-base
+    nodeset: kayobe-ubuntu-noble
+    voting: false
+    vars:
+      seed_vm_use_cirros: false
+
 - job:
     name: kayobe-seed-vm-q35-base
     parent: kayobe-seed-vm-base

zuul.d/project.yaml

@@ -76,6 +76,9 @@
         - kayobe-seed-images-rocky9-podman
         - kayobe-seed-images-ubuntu-noble
         - kayobe-seed-images-ubuntu-noble-podman
+        - kayobe-seed-vm-centos9s-cloud-image
         - kayobe-seed-vm-centos9s-q35
+        - kayobe-seed-vm-rocky9-cloud-image
         - kayobe-seed-vm-rocky9-q35
+        - kayobe-seed-vm-ubuntu-noble-cloud-image
         - kayobe-seed-vm-ubuntu-noble-q35