Force SELinux on "enterprise" deployment type

roles/openshift_node/tasks/main.yml

@@ -6,6 +6,9 @@
 - fail:
     msg: This role requres that osn_cluster_dns_ip is set
   when: osn_cluster_dns_ip is not defined or not osn_cluster_dns_ip
+- fail:
+    msg: "SELinux is disabled, This deployment type requires that SELinux is enabled."
+  when: (not ansible_selinux or ansible_selinux.status != 'enabled') and deployment_type in ['enterprise', 'online']
 
 - name: Install OpenShift Node package
   yum: pkg=openshift-node state=present