Merge pull request #332 from stackhpc/add-missing-ironic-exporter

feat: add `ironic-prometheus-exporter`

Author: mnasiadka

ansible/inventory/group_vars/all/kolla

@@ -50,6 +50,7 @@ kolla_container_images:
   - ironic-conductor
   - ironic-inspector
   - ironic-neutron-agent
+  - ironic-prometheus-exporter
   - ironic-pxe
   - iscsid
   - keepalived