Enable show_multiple_locations.

Change-Id: I6e2ac88f49caeb2fb85a9cb1af6d3e1b9ff6a09b
diff --git a/glance/control/single.yml b/glance/control/single.yml
index 13f4434..458cd37 100644
--- a/glance/control/single.yml
+++ b/glance/control/single.yml
@@ -5,3 +5,4 @@
     server:
       database:
         host: ${_param:single_address}
+      show_multiple_locations: True