[update_containers] Add mysqld_exporter and podman-exporter image overrides

Add ceilometerMysqldExporterImage and edpmPodmanExporterImage fields
to the update_containers template. This allows Zuul content-provider
jobs for mysqld_exporter and prometheus-podman-exporter to override
the container images used in functional tests via the OpenStackVersion
custom resource.

Generated-By: Claude-Code claude-opus-4-6
Signed-off-by: Jaromir Wysoglad <jwysogla@redhat.com>

Author: vyzigold

roles/update_containers/README.md

@@ -21,7 +21,9 @@ If apply, please explain the privilege escalation done in this role.
 * `cifmw_update_containers_manilashares`: The names of the manila shares prefix. Default to `[]`.
 * `cifmw_update_containers_agentimage`: Full Agent Image url for updating Agent Image.
 * `cifmw_update_containers_ceilometersgcoreImage`: Full Ceilometersgcore Image url for updating Ceilometersgcore Image.
+* `cifmw_update_containers_ceilometermysqldexporterImage`: Full Ceilometer mysqld_exporter Image url for updating Ceilometer mysqld_exporter Image.
 * `cifmw_update_containers_edpmnodeexporterimage`: Fill EdpmNodeExporter Image url for update Nodeexporter Image.
+* `cifmw_update_containers_edpmpodmanexporterImage`: Fill EdpmPodmanExporter Image url for update PodmanExporter Image.
 * `cifmw_update_containers_openstack`: Whether to generate CR for updating openstack containers. Default to `false`.
 * `cifmw_update_containers_ansibleee_image_url`: Full Ansibleee Image url for updating Ansibleee Image.
 * `cifmw_update_containers_edpm_image_url`: Full EDPM Image url for updating EDPM OS image.

roles/update_containers/templates/update_containers.j2

@@ -116,6 +116,12 @@ spec:
 {% if cifmw_update_containers_edpmnodeexporterimage is defined %}
     edpmNodeExporterImage: {{ cifmw_update_containers_edpmnodeexporterimage }}
 {% endif %}
+{% if cifmw_update_containers_ceilometermysqldexporterImage is defined %}
+    ceilometerMysqldExporterImage: {{ cifmw_update_containers_ceilometermysqldexporterImage }}
+{% endif %}
+{% if cifmw_update_containers_edpmpodmanexporterImage is defined %}
+    edpmPodmanExporterImage: {{ cifmw_update_containers_edpmpodmanexporterImage }}
+{% endif %}
 {% if cifmw_update_containers_agentimage is defined %}
 	    agentImage: {{ cifmw_update_containers_registry }}/{{ cifmw_update_containers_org }}/{{ cifmw_update_containers_name_prefix }}-baremetal-operator-agent:{{ cifmw_update_containers_tag }}
 {% endif %}