message: if x-lagoon not present, add the haproxy cfgid first, prepend haproxy hostname to x-lagoon always
diff: @@ -409,7 +409,8 @@ backend be_secure:{{$cfgIdx}}
  {{/* set X-LAGOON header if it is not already */}}
  acl h_xlagoon_exists res.hdr(X-LAGOON) -m found
  - http-response set-header X-LAGOON {{env "HOSTNAME" }}>{{$cfgIdx}} unless h_xlagoon_exists
  + http-response set-header X-LAGOON {{$cfgIdx}} unless h_xlagoon_exists
  + http-response replace-value X-LAGOON (.*) {{env "HOSTNAME"}}>\1
  {{- if matchPattern "(v4)?v6" $router_ip_v4_v6_mode }}
  # See the quoting rules in https://tools.ietf.org/html/rfc7239 for IPv6 addresses (v4 addresses get translated to v6 when in hybrid mode)
  