fix deprecation

templates/etc/nginx/nginx.conf.j2

@@ -63,7 +63,7 @@ http {
 
     ### Ansible included configs ###
 {% for http_conf in nginx_conf_http %}
-    {{ http_conf | indent(width=4, indentfirst=False) }}
+    {{ http_conf | indent(width=4, first=False) }}
 {% endfor %}    
 }
 #mail {