Reduced bramble cell by one node; added variant of ATT MPLS topology sans TC links.

Change-Id: Iaea0b6f9720cfdebc2af406b3a1094a9cc8f75e7
diff --git a/tools/test/cells/bramble b/tools/test/cells/bramble
index 73cbb9d..7f17d2f 100644
--- a/tools/test/cells/bramble
+++ b/tools/test/cells/bramble
@@ -3,6 +3,6 @@
 export OC2="192.168.1.12"
 export OC3="192.168.1.13"
 export OC4="192.168.1.14"
-export OC5="192.168.1.15"
+# export OC5="192.168.1.15"
 export OCN="192.168.1.15"
 export OCI="${OC1}"