Add WSGIPassAuthorization to the admin port too

Accidentally only added WSGIPassAuthorization to the public port,
like all the other WSGI props, it should be added for both ports.

Change-Id: I4e52e0881df464dfb7b28e22581f462e14e37bdb
diff --git a/files/apache-keystone.template b/files/apache-keystone.template
index b0cfb84..2190d83 100644
--- a/files/apache-keystone.template
+++ b/files/apache-keystone.template
@@ -22,6 +22,7 @@
     WSGIProcessGroup keystone-admin
     WSGIScriptAlias / %ADMINWSGI%
     WSGIApplicationGroup %{GLOBAL}
+    WSGIPassAuthorization On
     <IfVersion >= 2.4>
       ErrorLogFormat "%{cu}t %M"
     </IfVersion>