Replace host_interface with control_network_cidr

Add ability to autodetect interface name based on network CIDR

Related-Prod: PRODX-00000
Change-Id: I51b6701c4ca082c7560094cb25adcc615f5911d1
diff --git a/de/heat-templates/fragments/SrvInstancesVM.yaml b/de/heat-templates/fragments/SrvInstancesVM.yaml
index fbedc71..d2140d2 100644
--- a/de/heat-templates/fragments/SrvInstancesVM.yaml
+++ b/de/heat-templates/fragments/SrvInstancesVM.yaml
@@ -28,7 +28,7 @@
     type: string
   private_floating_interface:
     type: string
-  host_interface:
+  control_network_cidr:
     type: string
   functions_override:
     type: string
@@ -67,7 +67,7 @@
             $docker_ee_release: { get_param: docker_ee_release }
             $ucp_master_host: { get_param: ucp_master_host }
             $node_metadata: { get_param: metadata }
-            $host_interface: { get_param: host_interface }
+            $control_network_cidr: { get_param: control_network_cidr }
             $private_floating_interface: { get_param: private_floating_interface }
             $private_floating_interface_ip: { get_attr: [private_floating_server_port, fixed_ips, 0, ip_address] }
             $private_floating_network_cidr: { get_param: private_floating_network_cidr }