Fix passing devops utils refspec to frr

Related-Prod: https://mirantis.jira.com/browse/PRODX-47207
Change-Id: Iba71ec166c28e439d59e25c5c33d327c0c7907cd
diff --git a/de/heat-templates/top.yaml b/de/heat-templates/top.yaml
index ee7c964..78159b5 100644
--- a/de/heat-templates/top.yaml
+++ b/de/heat-templates/top.yaml
@@ -979,6 +979,7 @@
           hardware_metadata: { get_param: hardware_metadata}
           frr_bgp_neighbors: { list_join: [',', {get_attr: [workers, server_tun_ip]}] }
           availability_zone: { get_param: availability_zone }
+          devops_utils_refspec: { get_param: devops_utils_refspec }
 
   ntws:
     type: OS::Heat::ResourceGroup