eliminate remaining reference to /opt/planetstack from python files
diff --git a/planetstack/syndicate_observer/run.sh b/planetstack/syndicate_observer/run.sh
index b8fb166..824a248 100644
--- a/planetstack/syndicate_observer/run.sh
+++ b/planetstack/syndicate_observer/run.sh
@@ -1,2 +1,2 @@
-export PYTHONPATH=/opt/planetstack
-python syndicate-backend.py  -C /opt/planetstack/syndicate_observer/syndicate_observer_config
+export XOS_DIR=/opt/xos
+python syndicate-backend.py  -C $XOS_DIR/syndicate_observer/syndicate_observer_config