use dpdk interfaces on computes in cookied-mcp-pike-dpdk lab

- OVS requires at least two interfaces for add-bond command,
  so add an additional interface on cmp and gtw nodes.

- dpdk is still not working because of missing igb_uio module

Change-Id: I316ebada227304060b81441c090461bbd2bb52ef
diff --git a/tcp_tests/templates/cookied-mcp-pike-dpdk/underlay.yaml b/tcp_tests/templates/cookied-mcp-pike-dpdk/underlay.yaml
index 98e5a56..7892635 100644
--- a/tcp_tests/templates/cookied-mcp-pike-dpdk/underlay.yaml
+++ b/tcp_tests/templates/cookied-mcp-pike-dpdk/underlay.yaml
@@ -554,6 +554,9 @@
                   l2_network_device: tenant
                   interface_model: *interface_model
                 - label: ens6
+                  l2_network_device: tenant
+                  interface_model: *interface_model
+                - label: ens7
                   l2_network_device: external
                   interface_model: *interface_model
               network_config: &all_network_config
@@ -568,6 +571,9 @@
                     - tenant
                 ens6:
                   networks:
+                    - tenant
+                ens7:
+                  networks:
                     - external
 
           - name: {{ HOSTNAME_CMP02 }}