Add external interface on proxy node for Queens labs

Modified labs:
- cookied-cicd-queens-dvr-sl
- cookied-mcp-queens-dvr-ceph
- cookied-mcp-queens-dvr-ssl-barbican
- cookied-mcp-queens-dvr-ssl
- cookied-mcp-queens-dvr
- cookied-mcp-queens-ovs

Change-Id: Ibe0624c6b75624a4565a20dfaad4f628a14d6c1f
Related-Bug: PROD-22111
diff --git a/tcp_tests/templates/cookied-mcp-queens-dvr/underlay.yaml b/tcp_tests/templates/cookied-mcp-queens-dvr/underlay.yaml
index f6d9b98..2cb86de 100644
--- a/tcp_tests/templates/cookied-mcp-queens-dvr/underlay.yaml
+++ b/tcp_tests/templates/cookied-mcp-queens-dvr/underlay.yaml
@@ -597,9 +597,26 @@
                   cloudinit_meta_data: *cloudinit_meta_data
                   cloudinit_user_data: *cloudinit_user_data_1604
 
-              interfaces: *interfaces
-              network_config: *network_config
-
+              interfaces:
+                - label: ens3
+                  l2_network_device: admin
+                  interface_model: *interface_model
+                - label: ens4
+                  l2_network_device: private
+                  interface_model: *interface_model
+                - label: ens5
+                  l2_network_device: external
+                  interface_model: *interface_model
+              network_config:
+                ens3:
+                  networks:
+                    - admin
+                ens4:
+                  networks:
+                    - private
+                ens5:
+                  networks:
+                    - external
 
           - name: {{ HOSTNAME_CMP01 }}
             role: salt_minion