Pre-cache images when using TP ucp image

Related-Prod: PRODX-7035
Change-Id: I8f682efd4c39156f6db4b6299f3a48663da26423
diff --git a/de/heat-templates/fragments/SrvInstancesVM.yaml b/de/heat-templates/fragments/SrvInstancesVM.yaml
index fab95cf..6d2bbb9 100644
--- a/de/heat-templates/fragments/SrvInstancesVM.yaml
+++ b/de/heat-templates/fragments/SrvInstancesVM.yaml
@@ -68,6 +68,7 @@
             $docker_ee_url: { get_param: docker_ee_url }
             $docker_ee_release: { get_param: docker_ee_release }
             $ucp_master_host: { get_param: ucp_master_host }
+            $docker_ucp_image: { get_param: docker_ucp_image }
             $node_metadata: { get_param: metadata }
             $control_network_cidr: { get_param: control_network_cidr }
             $private_floating_interface: { get_param: private_floating_interface }