Use e1000 virtual interface type for cookied-mcp-pike-dvr

Change-Id: I49d827b76f7492d569afcbcfb446116ea8d3a948
diff --git a/tcp_tests/templates/cookied-mcp-pike-dpdk/underlay.yaml b/tcp_tests/templates/cookied-mcp-pike-dpdk/underlay.yaml
index 7892635..1097d70 100644
--- a/tcp_tests/templates/cookied-mcp-pike-dpdk/underlay.yaml
+++ b/tcp_tests/templates/cookied-mcp-pike-dpdk/underlay.yaml
@@ -552,10 +552,10 @@
                   interface_model: *interface_model
                 - label: ens5
                   l2_network_device: tenant
-                  interface_model: *interface_model
+                  interface_model: e1000
                 - label: ens6
                   l2_network_device: tenant
-                  interface_model: *interface_model
+                  interface_model: e1000
                 - label: ens7
                   l2_network_device: external
                   interface_model: *interface_model