ONOS-737: regexp for grabbing OC* variables changed

Change-Id: Id5651ffb41230a39c6ed68e1605feaf3c0aa337b
diff --git a/tools/test/bin/onos-start-network b/tools/test/bin/onos-start-network
index 5412e09..083262d 100755
--- a/tools/test/bin/onos-start-network
+++ b/tools/test/bin/onos-start-network
@@ -36,4 +36,4 @@
 $SCPCMD $ONOS_ROOT/tools/test/topos/* $ONOS_USER@$OCN:topos/
 
 echo "Starting Network."
-$SSHCMD -t $ONOS_USER@$OCN sudo python $topo $(env | sort | egrep "OC[0-9]+" | cut -d= -f2)
+$SSHCMD -t $ONOS_USER@$OCN sudo python $topo $(env | sort | egrep "^OC[0-9]+" | cut -d= -f2)