add any_errors_fatal to openstack install playbook

playbooks/openstack/openshift-cluster/install.yml

@@ -11,6 +11,7 @@
 - import_playbook: ../../prerequisites.yml
 
 - name: Prepare the Nodes in the cluster for installation
+  any_errors_fatal: true
   hosts: oo_all_hosts
   become: yes
   gather_facts: yes