REORG: include: move http_rules.h to haproxy/http_rules.h

There was no include file. This one still includes types/proxy.h.
diff --git a/src/cache.c b/src/cache.c
index ad34a9d..707a011 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -13,6 +13,7 @@
 #include <haproxy/action-t.h>
 #include <haproxy/api.h>
 #include <haproxy/http_htx.h>
+#include <haproxy/http_rules.h>
 #include <haproxy/shctx.h>
 #include <import/eb32tree.h>
 #include <import/sha1.h>
@@ -25,7 +26,6 @@
 #include <proto/cli.h>
 #include <proto/proxy.h>
 #include <proto/filters.h>
-#include <proto/http_rules.h>
 #include <proto/http_ana.h>
 #include <proto/log.h>
 #include <proto/stream.h>