Supports IPv6 address for scp and rsync

ONOS-7680

Change-Id: Ica7466715c64765310bfc7bf34126ed02d1818b7
diff --git a/tools/test/bin/onos-push-topos b/tools/test/bin/onos-push-topos
index ba96e50..0200c6f 100755
--- a/tools/test/bin/onos-push-topos
+++ b/tools/test/bin/onos-push-topos
@@ -9,4 +9,4 @@
 node=${1:-$OCN}
 
 ssh $ONOS_USER@$node sudo rm -f topos/*.pyc
-scp -qr $ONOS_ROOT/tools/test/topos $ONOS_USER@$node:
+scp -qr $ONOS_ROOT/tools/test/topos $ONOS_USER@[$node]: