CLEANUP: include: tree-wide alphabetical sort of include files

This patch fixes all the leftovers from the include cleanup campaign. There
were not that many (~400 entries in ~150 files) but it was definitely worth
doing it as it revealed a few duplicates.
diff --git a/src/ssl_sample.c b/src/ssl_sample.c
index 70b35b2..cc6f537 100644
--- a/src/ssl_sample.c
+++ b/src/ssl_sample.c
@@ -22,6 +22,7 @@
 
 #include <haproxy/acl.h>
 #include <haproxy/api.h>
+#include <haproxy/arg.h>
 #include <haproxy/buf-t.h>
 #include <haproxy/obj_type.h>
 #include <haproxy/openssl-compat.h>
@@ -30,8 +31,6 @@
 #include <haproxy/ssl_utils.h>
 #include <haproxy/tools.h>
 
-#include <haproxy/arg.h>
-
 
 /***** Below are some sample fetching functions for ACL/patterns *****/