Connect frr to route reflector

Related-Prod: PRODX-11698
Change-Id: Icf6a61415a8965960c9510666ff6d5341ab3ffde
diff --git a/de/heat-templates/top.yaml b/de/heat-templates/top.yaml
index d80307a..8d4a3d0 100644
--- a/de/heat-templates/top.yaml
+++ b/de/heat-templates/top.yaml
@@ -718,6 +718,7 @@
           tun_network: { get_attr: [tun_network, tun_network_id] }
           tun_subnet_id: { get_attr: [tun_network, tun_subnet_id] }
           hardware_metadata: { get_param: hardware_metadata}
+          frr_bgp_neighbors: { list_join: [',', {get_attr: [workers, server_tun_ip]}] }
 
   spares:  # spares for osds/cmps
     type: OS::Heat::ResourceGroup