Add doc link to check_for_config

roles/openshift_node_group/tasks/check_for_config.yml

@@ -3,5 +3,5 @@
 - include_tasks: fetch_config.yml
 
 - fail:
-    msg: "Configmap for {{ l_openshift_node_group_name }} must be present"
+    msg: "Configmap for {{ l_openshift_node_group_name }} must be present. Please see https://docs.openshift.com/container-platform/3.10/upgrading/automated_upgrades.html for details."
   when: configout.results.results.0 == {}