REORG: include: move common/net_helper.h to haproxy/net_helper.h

No change was necessary.
diff --git a/src/http_ana.c b/src/http_ana.c
index 41f119d..2c44a48 100644
--- a/src/http_ana.c
+++ b/src/http_ana.c
@@ -13,7 +13,7 @@
 #include <haproxy/api.h>
 #include <haproxy/base64.h>
 #include <common/htx.h>
-#include <common/net_helper.h>
+#include <haproxy/net_helper.h>
 #include <common/uri_auth.h>
 
 #include <types/capture.h>