uselagoon#824 - if x-lagoon not present, add the haproxy cfgid first, prepend haproxy hostname to x-lagoon always

Author: twardnw

openshift-setup/router-template.cfg

@@ -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)