[CI] Test Ironic on Debian

Depends-On: https://review.opendev.org/c/openstack/kolla-ansible/+/797190
Change-Id: I8ada844a2b034547c045248b324c1955ad4cf6ae
(cherry picked from commit 02e8e76)

Author: yoctozepto

.zuul.d/debian.yaml

@@ -20,6 +20,8 @@
     experimental:
       jobs:
         - kolla-build-no-infra-wheels-debian-source
+        - kolla-ansible-debian-source-ironic:
+            files: ^docker\/(base|dnsmasq|ironic|ironic-inspector|iscsid|openstack-base)\/.*
 
 - job:
     name: kolla-build-debian-source