Include <iterator> in services.h as now more than one file uses it

include/services.h

@@ -43,6 +43,7 @@
 #include <bitset>
 #include <set>
 #include <algorithm>
+#include <iterator>
 
 #include "defs.h"
 

modules/m_redis.cpp

@@ -11,8 +11,6 @@
 #include "module.h"
 #include "modules/redis.h"
 
-#include <iterator> // back_inserter
-
 using namespace Redis;
 
 class MyRedisService;