Basic topo to test new VPLS

Change-Id: Ie6b6f0ab431850e58dc8741f94c98f06b2243e2c
diff --git a/tools/test/topos/vpls.recipe b/tools/test/topos/vpls.recipe
new file mode 100644
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+++ b/tools/test/topos/vpls.recipe
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+# Default VPLS topology recipe
+export OTD=4 # ONOS Topology Devices
+export OTL=10 # ONOS Topology Links
+export OTH=4 # ONOS Topology Hosts