Fix 'backingFilePath' of shibboleth conf
diff --git a/shibboleth/files/shibboleth2.xml b/shibboleth/files/shibboleth2.xml
index d530ad1..ad5554c 100644
--- a/shibboleth/files/shibboleth2.xml
+++ b/shibboleth/files/shibboleth2.xml
@@ -70,7 +70,7 @@
             styleSheet="/shibboleth-sp/main.css"/>
 
         <MetadataProvider type="XML" uri="{{ server.idp_metadata_url }}"
-              backingFilePath="/etc/shibboleth/metadata.xml" reloadInterval="180000">
+              backingFilePath="/var/cache/shibboleth/metadata.xml" reloadInterval="180000">
             {%- if server.idp_certificate is defined %}
             <MetadataFilter type="Signature" certificate="/etc/shibboleth/fedsigner.pem"/>
             {%- endif %}