Fix node name in  "Enable forward policy" step

Change-Id: Ic841a0ed332c27f4dbd897ba043ae7f5793f5d3b
diff --git a/tcp_tests/templates/cookied-mcp-pike-ovs/openstack.yaml b/tcp_tests/templates/cookied-mcp-pike-ovs/openstack.yaml
index c0d2330..76eb198 100644
--- a/tcp_tests/templates/cookied-mcp-pike-ovs/openstack.yaml
+++ b/tcp_tests/templates/cookied-mcp-pike-ovs/openstack.yaml
@@ -363,7 +363,7 @@
 
 - description: Enable forward policy
   cmd: iptables --policy FORWARD ACCEPT
-  node_name: {{ HOSTNAME_GTW0101 }}
+  node_name: {{ HOSTNAME_GTW01 }}
   retry: {count: 1, delay: 30}
   skip_fail: false