Supports setParameter configuration

Author: neilime

templates/mongod.conf.j2

@@ -55,3 +55,10 @@ systemLog:
   destination: {{ mongodb_systemlog_destination }}
   logAppend: {{ mongodb_systemlog_logappend | to_nice_json }}
   path: {{ mongodb_systemlog_path }}
+
+{% if mongodb_set_parameters -%}
+setParameter:
+  {% for key, value in mongodb_set_parameters.items() -%}
+  {{ key }}: {{ value }}
+  {% endfor -%}
+{% endif %}