[CORD-1650]
Refactor interface/bridge handling

Change-Id: I83fd9eb3e8440ba277b7b4d1ed41cb18347b6916
diff --git a/roles/compute-node-config/templates/openstack-compute.yaml.j2 b/roles/compute-node-config/templates/openstack-compute.yaml.j2
index d5340f7..5e0b69a 100644
--- a/roles/compute-node-config/templates/openstack-compute.yaml.j2
+++ b/roles/compute-node-config/templates/openstack-compute.yaml.j2
@@ -1,4 +1,3 @@
-
 {#
 Copyright 2017-present Open Networking Foundation
 
@@ -15,7 +14,6 @@
 limitations under the License.
 #}
 
-
 tosca_definitions_version: tosca_simple_yaml_1_0
 
 imports:
@@ -44,7 +42,7 @@
 
 # OpenStack compute nodes
 {% for node in groups['compute'] %}
-{% for ext_if in compute_external_interfaces %}
+{% for ext_if in computenode_fabric_interfaces %}
 {% set ansible_ext_if = 'ansible_' ~ ext_if | regex_replace('\W', '_') %}
 {% if hostvars[node][ansible_ext_if] is defined and 'ipv4' in hostvars[node][ansible_ext_if] %}
 {% set node_interface = hostvars[node][ansible_ext_if] %}