Add stacklight nodes to the cookied-mcp-ocata-dvr-vxlan

Change-Id: Ibacd2e02ba2a884b8347c351ee6392601de59fc1
diff --git a/tcp_tests/templates/cookied-mcp-ocata-dvr-vxlan/underlay--user-data1604.yaml b/tcp_tests/templates/cookied-mcp-ocata-dvr-vxlan/underlay--user-data1604.yaml
index 677c392..a5f6916 100644
--- a/tcp_tests/templates/cookied-mcp-ocata-dvr-vxlan/underlay--user-data1604.yaml
+++ b/tcp_tests/templates/cookied-mcp-ocata-dvr-vxlan/underlay--user-data1604.yaml
@@ -42,7 +42,7 @@
    #- sudo ifup ens4
 
    # Create swap
-   - fallocate -l 4G /swapfile
+   - fallocate -l 16G /swapfile
    - chmod 600 /swapfile
    - mkswap /swapfile
    - swapon /swapfile