Skip watcher containers for downstream

Watcher related packages got added in RDO antelope but not available in
OSP-18 downstream.

openstack-k8s-operators/tcib#215 adds watcher
container in tcib. Since downstream tcib jobs install the tcib rpm from
main branch so it may break downstream container build and component
job.

So in order to avoid breakage, we are skip building watcher related
containers.

Depends-On: openstack-k8s-operators/tcib#215

Signed-off-by: Chandan Kumar <raukadah@gmail.com>

roles/build_containers/defaults/main.yml

@@ -55,3 +55,12 @@ cifmw_build_containers_install_from_source: false
 # cifmw_build_containers_dockerfile_labels
 # cifmw_build_containers_extra_config
 # cifmw_build_containers_build_timeout
+
+# Note(Chandankumar): Remove it once watcher related packages are available downstream.
+cifmw_build_containers_exclude_containers:
+  rhos18:
+    rhel9:
+      - openstack-watcher-base
+      - openstack-watcher-api
+      - openstack-watcher-applier
+      - openstack-watcher-decision-engine