memcached : add dcrond binary

software/memcached/instance.cfg

@@ -7,6 +7,7 @@ develop-eggs-directory = ${buildout:develop-eggs-directory}
 
 [instance]
 recipe = ${instance-recipe:egg}:${instance-recipe:module}
+dcrond_binary = ${dcron:location}/sbin/crond
 memcached_binary = ${memcached:location}/bin/memcached
 openssl_binary = ${openssl:location}/bin/openssl
 rdiff_backup_binary = ${buildout:bin-directory}/rdiff-backup