Parameterize all global configuration parameters

  - Keeps full backwards compatibility

Related: PROD-29206
Fixes: PROD-29088

Change-Id: I3d71c265e7975060d9804288b341775acccdf9da
diff --git a/.kitchen.yml b/.kitchen.yml
index f837b6a..772780e 100644
--- a/.kitchen.yml
+++ b/.kitchen.yml
@@ -78,4 +78,9 @@
     provisioner:
       pillars-from-files:
         haproxy.sls: tests/pillar/single_rate_limiting.sls
+
+  - name: single_global_parameters
+    provisioner:
+      pillars-from-files:
+        haproxy.sls: tests/pillar/single_global_parameters.sls
 # vim: ft=yaml sw=2 ts=2 sts=2 tw=125