Use cifmw_architecture_scenario file in set va scenario

openstack-k8s-operators/architecture#383 drops
defaults.yaml scenario file in favor of
openstack-k8s-operators/architecture#375.

#2267
suggests to use  Use cifmw_architecture_scenario to set proper
automation file.

Whereever default.yaml is used, the job broke. This pr fixes the
same using cifmw_architecture_scenario file.

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

roles/kustomize_deploy/molecule/flexible_loop/converge.yml

@@ -35,12 +35,14 @@
 
     - name: Load architecture automation
       vars:
+        cifmw_architecture_scenario: hci
         _automation: >-
           {{
             (ansible_user_dir,
              'src/github.com/openstack-k8s-operators',
              'architecture/automation/vars',
-             'default.yaml') | path_join
+             cifmw_architecture_scenario~'.yaml')
+             | path_join
           }}
         _file: "{{ lookup('file', _automation) | from_yaml }}"
       ansible.builtin.set_fact: