Load modules before events directive

In Nginx 1.12.x (latest stable version) you will have a config error
if you try to load modules before the events directive. With this
change we avoid this problem.

templates/nginx.conf.j2

@@ -7,6 +7,10 @@ pid        {{ nginx_pidfile }};
 worker_processes  {{ nginx_worker_processes }};
 {% endblock %}
 
+{% if nginx_extra_conf_options %}
+{{ nginx_extra_conf_options }}
+{% endif %}
+
 {% block events %}
 events {
     worker_connections  {{ nginx_worker_connections }};
@@ -14,10 +18,6 @@ events {
 }
 {% endblock %}
 
-{% if nginx_extra_conf_options %}
-{{ nginx_extra_conf_options }}
-{% endif %}
-
 http {
     {% block http_begin %}{% endblock %}