Supports IPv6 address for scp and rsync

ONOS-7680

Change-Id: Ica7466715c64765310bfc7bf34126ed02d1818b7
diff --git a/tools/test/bin/onos-start-network b/tools/test/bin/onos-start-network
index 083262d..e668b8d 100755
--- a/tools/test/bin/onos-start-network
+++ b/tools/test/bin/onos-start-network
@@ -33,7 +33,7 @@
 
 echo "Copying topology files to mininet vm."
 $SSHCMD -n $ONOS_USER@$OCN mkdir -p topos
-$SCPCMD $ONOS_ROOT/tools/test/topos/* $ONOS_USER@$OCN:topos/
+$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)