Added materials for the SDN-IP tutorial.

Change-Id: Ib0c23d6f582bcdddfac651788529420a80d9a1d7
diff --git a/tools/test/topos/sdnip/configs/zebra.conf b/tools/test/topos/sdnip/configs/zebra.conf
new file mode 100644
index 0000000..6a4ae95
--- /dev/null
+++ b/tools/test/topos/sdnip/configs/zebra.conf
@@ -0,0 +1,5 @@
+! Configuration for zebra (NB: it is the same for all routers)
+!
+hostname zebra 
+password sdnip
+log stdout