Run openstack operator kuttl test last

Try running the openstack-operator kuttl last, to see if it fixes the
current issue with the webhooks conflict seen in barbican kuttl tests.

zuul.d/kuttl_multinode.yaml

@@ -61,10 +61,10 @@
       cifmw_extras:
         - '@scenarios/centos-9/kuttl_multinode.yml'
       cifmw_kuttl_tests_operator_list:
-        - openstack
         - barbican
         - keystone
         - horizon
+        - openstack
       commands_before_kuttl_run:
         - oc get pv
         - oc get all