REORG: include: move auth.h to haproxy/auth{,-t}.h

The STATS_DEFAULT_REALM and STATS_DEFAULT_URI were moved to defaults.h.
It was required to include types/pattern.h and types/sample.h since they
are mentioned in function prototypes.

It would be wise to merge this with uri_auth.h later.
diff --git a/include/types/acl.h b/include/types/acl.h
index 89c3c93..78b2612 100644
--- a/include/types/acl.h
+++ b/include/types/acl.h
@@ -22,11 +22,11 @@
 #ifndef _TYPES_ACL_H
 #define _TYPES_ACL_H
 
+#include <haproxy/auth-t.h>
 #include <haproxy/api-t.h>
 #include <haproxy/list-t.h>
 
 #include <haproxy/arg-t.h>
-#include <types/auth.h>
 #include <types/pattern.h>
 #include <types/proxy.h>
 #include <types/server.h>