build: fixed modules broken by latest build

fixes #18

modules/kmemcached/kmemcached.c

@@ -15,6 +15,7 @@
  */
 
 #include <libknot/internal/namedb/namedb.h>
+#include <contrib/cleanup.h>
 
 #include "daemon/engine.h"
 #include "lib/module.h"

modules/kmemcached/namedb_memcached.c

@@ -28,6 +28,7 @@
 #include <libmemcached/memcached.h>
 #include <libknot/internal/namedb/namedb.h>
 #include <libknot/errcode.h>
+#include <contrib/cleanup.h>
 
 #include "lib/generic/array.h"
 #include "lib/cache.h"

modules/redis/redis.c

@@ -15,6 +15,7 @@
  */
 
 #include <libknot/internal/namedb/namedb.h>
+#include <contrib/cleanup.h>
 #include <uv.h>
 
 #include "modules/redis/redis.h"