Added start-rest.sh and modified onos/casandra start script
diff --git a/web/topology_rest.py b/web/topology_rest.py
index cdc8a4d..a91bd7c 100755
--- a/web/topology_rest.py
+++ b/web/topology_rest.py
@@ -122,9 +122,15 @@
       sw = {}
       sw['name']=dpid
       if str(v['state']) == "ACTIVE":
-         sw['group']=0
-      if str(v['state']) == "INACTIVE":
+        if dpid[-2:-1] == "a":
          sw['group']=1
+        if dpid[-2:-1] == "b":
+         sw['group']=2
+        if dpid[-2:-1] == "c":
+         sw['group']=3
+      if str(v['state']) == "INACTIVE":
+         sw['group']=0
+
 
       switches.append(sw)