Description of problem:
After applying the latest updates, the external authentication doesn't work anymore.

Version-Release number of selected component (if applicable):
cfme-5.3.2.6-1.el6cf.x86_64

How reproducible:
always after "yum update cfme" to current version

Steps to Reproduce:
1. setup an appliance with 5.3.x
2. configure external authentication
3. run "yum update"

Actual results:
external authentication doesn't work anymore

Expected results:
should still work

Additional info:
I found out that the modifications in the following files get reset during the upgrade:
/etc/httpd/conf.d/cfme-https-application.conf

Here is the diff before and after "yum update":
--- cfme-https-application.conf-after-upgrade	2015-01-27 20:23:59.286444537 +0100
+++ cfme-https-application.conf-before-ugprade	2015-01-27 20:23:43.049444565 +0100
@@ -1,4 +1,6 @@
 ## CFME SSL Virtual Host Context
+Include conf.d/cfme-external-auth
+
 
 <VirtualHost *:443>
 
@@ -8,6 +10,14 @@
 Include conf.d/cfme-redirects-ui
 ProxyPreserveHost on
 RequestHeader set X_FORWARDED_PROTO 'https'
+RequestHeader unset X_REMOTE_USER
+RequestHeader set X_REMOTE_USER           %{REMOTE_USER}e            env=REMOTE_USER
+RequestHeader set X_EXTERNAL_AUTH_ERROR   %{EXTERNAL_AUTH_ERROR}e    env=EXTERNAL_AUTH_ERROR
+RequestHeader set X_REMOTE_USER_EMAIL     %{REMOTE_USER_EMAIL}e      env=REMOTE_USER_EMAIL
+RequestHeader set X_REMOTE_USER_FIRSTNAME %{REMOTE_USER_FIRSTNAME}e  env=REMOTE_USER_FIRSTNAME
+RequestHeader set X_REMOTE_USER_LASTNAME  %{REMOTE_USER_LASTNAME}e   env=REMOTE_USER_LASTNAME
+RequestHeader set X_REMOTE_USER_FULLNAME  %{REMOTE_USER_FULLNAME}e   env=REMOTE_USER_FULLNAME
+RequestHeader set X_REMOTE_USER_GROUPS    %{REMOTE_USER_GROUPS}e     env=REMOTE_USER_GROUPS
 
 ErrorLog /var/www/miq/vmdb/log/apache/ssl_error.log
 TransferLog /var/www/miq/vmdb/log/apache/ssl_access.log