MAINT: Add forwardfor headers to haproxy

As we are using a proxy to access grafana we should include the forwardfor header so Grafana logs can see the source IP for a request

Author: khalford

grafana_monitoring/roles/haproxy/templates/haproxy.cfg.j2

@@ -22,4 +22,5 @@ frontend {{ inventory_hostname }}
   default_backend localhost
 
 backend localhost
+  option forwardfor
   server grafana 127.0.0.1:3000 check