Add commented examples using the Dummy switch driver

Change-Id: I80ac77ee07d6f8738c13d638fcdf6ca1da52a1ca
diff --git a/vland.cfg b/vland.cfg
index 0dc189f..83a11dc 100644
--- a/vland.cfg
+++ b/vland.cfg
@@ -54,11 +54,13 @@
 #enable_password =
 #debug = True
 
-#[switch baz]
-#name = baz
-#driver = CiscoSX300
-#username = cisco
-#password = cisco
+#[switch dummy-48]
+#name = dummy-48
+#driver = Dummy
+#
+#[switch dummy-25]
+#name = dummy-25
+#driver = Dummy
 
 [logging]
 # Supply a filename, or leave unspecified for stderr