don't create the xos network if it already exists, fix db name

Change-Id: I1cdf0ab12c0eec96c205a63f02986b3d4ff2f64d
diff --git a/cord-pod/files/exampleservice_config b/cord-pod/files/exampleservice_config
index b537527..4022e09 100644
--- a/cord-pod/files/exampleservice_config
+++ b/cord-pod/files/exampleservice_config
@@ -3,7 +3,7 @@
 name=xos
 user=postgres
 password=password
-host=localhost
+host=xos_db
 port=5432
 
 # Required by XOS