Parameterize all global configuration parameters

  - Keeps full backwards compatibility

Related: PROD-29206
Fixes: PROD-29088

Change-Id: I3d71c265e7975060d9804288b341775acccdf9da
diff --git a/README.rst b/README.rst
index 6fd2aa2..4b4b5c4 100644
--- a/README.rst
+++ b/README.rst
@@ -696,6 +696,55 @@
                 enabled: true
                 value: use_backend nova_metadata_api-rate_limit if mark_seen too_many_requests_6 x_tenant_id
 
+Pillar demostrating all global variables which are parametrized
+
+  All values may be defined as a single element or a list of elements with the same keyword
+  Keyword is added automatically and should not be included in the value
+
+.. code-block:: yaml
+
+  haproxy:
+    proxy:
+      global:
+        chroot: /var/lib/haproxy
+        daemon: true
+        gid: ''
+        group: haproxy
+        cpu-map:
+        - '0 1'
+        - '1 2'
+        log:
+        - '/dev/log local0'
+        - '/dev/log local1 notice'
+        log-send-hostname: ''
+        nbproc: 5
+        pidfile: '/var/run/haproxy.pid'
+        uid: ''
+        ulimit-n: ''
+        user: 'haproxy'
+        stats:
+        - 'socket /var/run/new.sock mode 660 level admin'
+        - 'timeout 30s'
+        - 'bind-process 1 2'
+        node: ''
+        description: ''
+        maxconn: 25000
+        maxpipes: ''
+        noepoll: ''
+        nokqueue: ''
+        nopoll: ''
+        nosepoll: ''
+        nosplice: ''
+        spread-checks: 4
+        tune_bufsize: 32768
+        tune_chksize: ''
+        tune_maxaccept: ''
+        tune_maxpollevents: ''
+        tune_maxrewrite: 1024
+        tune_rcvbuf_client: ''
+        tune_rcvbuf_server: ''
+        tune_sndbuf_client: ''
+        tune_sndbuf_server: ''
 
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 =========