Set the correct URLs in the version return data

The URLs advertised in the data returned by keystone's '/' route default
to localhost and is not usable from off-host.  Not that anything in
DevStack uses it (yet).

Change-Id: I049789f568eff48c1abb0678c3ac0ae8a8960c64
diff --git a/lib/keystone b/lib/keystone
index 2edd137..d07b34f 100644
--- a/lib/keystone
+++ b/lib/keystone
@@ -119,6 +119,10 @@
         iniset $KEYSTONE_CONF identity driver "keystone.identity.backends.ldap.Identity"
     fi
 
+    # Set the URL advertised in the ``versions`` structure returned by the '/' route
+    iniset $KEYSTONE_CONF DEFAULT public_endpoint "$KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:%(public_port)s/"
+    iniset $KEYSTONE_CONF DEFAULT admin_endpoint "$KEYSTONE_SERVICE_PROTOCOL://$KEYSTONE_SERVICE_HOST:%(admin_port)s/"
+
     if is_service_enabled tls-proxy; then
         # Set the service ports for a proxy to take the originals
         iniset $KEYSTONE_CONF DEFAULT public_port $KEYSTONE_SERVICE_PORT_INT