Pass base url for binaries to cloud init

Related-Prod: PRODX-3456
Change-Id: Ia5856c09f6b9a558c27ba7da6334baffcddc0d7c
diff --git a/de/heat-templates/top.yaml b/de/heat-templates/top.yaml
index dbc47ec..3021eea 100644
--- a/de/heat-templates/top.yaml
+++ b/de/heat-templates/top.yaml
@@ -323,6 +323,9 @@
   docker_ucp_swarm_data_port:
     type: string
     default: 4789
+  binary_base_url:
+    type: string
+    default: 'http://binary.mirantis.com'
   tunnel_interface:
     type: string
     default: ''