Explicitly label .origin files as configuration

subscription-manager has a daemon that runs in a confined domain,
and it doesn't have permission to write usr_t, which is the default
label of /ostree/deploy/$osname/deploy.

A better long term fix is probably to move the origin file into the
deployment root as /etc/ostree/origin.conf or so.

In the meantime, let's ensure the .origin files are labeled as
configuration.

src/libostree/ostree-sysroot-private.h

@@ -34,6 +34,8 @@ struct OstreeSysroot {
 
   gboolean loaded;
   
+  OstreeSePolicy *sepolicy;
+  
   GPtrArray *deployments;
   int bootversion;
   int subbootversion;