[6.0] 91b22de5d Add MAIN.esi_req counter to changelog

[Martin Blix Grydeland]

commit 91b22de5d70f18bf1c41b189f5a30d3276991ff2
Author: Martin Blix Grydeland <martin at varnish-software.com>
Date:   Wed Nov 10 10:46:02 2021 +0100

    Add MAIN.esi_req counter to changelog

diff --git a/doc/changes.rst b/doc/changes.rst
index 1df4563bb..cf188ce97 100644
--- a/doc/changes.rst
+++ b/doc/changes.rst
@@ -38,6 +38,9 @@ Varnish Cache 6.0.9 (unreleased)
 * Make it possible to set the `sess.timeout_idle` VCL variable also when
   using `VCL` syntax version `4.0`. (3564_)
 
+* New `varnishstat` counter `MAIN.esi_req`. This increments for each ESI
+  subrequest that is made.
+
 .. _3617: https://github.com/varnishcache/varnish-cache/pull/3617
 .. _3437: https://github.com/varnishcache/varnish-cache/issues/3437'
 .. _3564: https://github.com/varnishcache/varnish-cache/issues/3564'