koschei: revert back to the old append forwarded headers to fix auth

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

playbooks/openshift-apps/koschei.yml

@@ -30,6 +30,8 @@
     host: "koschei{{ env_suffix }}.fedoraproject.org"
     serviceport: web
     servicename: frontend
+    annotations:
+        haproxy.router.openshift.io/set-forwarded-headers: append
 
   tasks:
     - name: Apply objects