[CORD-1650]
Finish changeover to new network configuration variables

Change-Id: I9d96c49e908245d009976ae101ca4b704e8dbab8
diff --git a/roles/interface-config/tasks/main.yml b/roles/interface-config/tasks/main.yml
index f1d1253..c3d17c2 100644
--- a/roles/interface-config/tasks/main.yml
+++ b/roles/interface-config/tasks/main.yml
@@ -38,7 +38,7 @@
   when: management_net_config.changed
   command: "ifup {{ item }}"
   with_flattened:
-   - mgmtbridge
+   - "{{ management_net_bridge }}"
    - mgmtbond
    - "{{ management_net_interfaces }}"
    - vethmgmt0