[redirects-web] Turn on PreserveHost

[Andrea Veri <averi src gnome org>]

commit 6e5d7e2b5923b3ec8da1c960141e3a0b65aa5633
Author: Andrea Veri <averi redhat com>
Date:   Wed Feb 19 16:57:18 2020 +0100

    Turn on PreserveHost

 app_data/httpd-cfg/gtk.org.conf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/app_data/httpd-cfg/gtk.org.conf b/app_data/httpd-cfg/gtk.org.conf
index 181102d..146a955 100644
--- a/app_data/httpd-cfg/gtk.org.conf
+++ b/app_data/httpd-cfg/gtk.org.conf
@@ -7,7 +7,7 @@
     SSLProxyCheckPeerExpire on
 
     Header always set Host "infrastructure.pages.gitlab.gnome.org"
-    ProxyPreserveHost Off
+    ProxyPreserveHost On
     ProxyPass / https://infrastructure.pages.gitlab.gnome.org/gtk-web/ retry=0
     ProxyPass /.well-known/acme-challenge !
     ProxyPassReverse / https://infrastructure.pages.gitlab.gnome.org/gtk-web/