TEST/MINOR: program: add deprecated directive to haproxy.cfg

Author: mjuraga

e2e/tests/process_manager/data/haproxy.cfg

@@ -8,6 +8,7 @@ global
     user        haproxy
     group       haproxy
     stats socket /var/lib/haproxy/stats level admin
+    expose-deprecated-directives
 
 defaults mydefaults
     mode                    http