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

Change-Id: I9d96c49e908245d009976ae101ca4b704e8dbab8
diff --git a/roles/create-lxd/defaults/main.yml b/roles/create-lxd/defaults/main.yml
index 2a121f0..70f70c2 100644
--- a/roles/create-lxd/defaults/main.yml
+++ b/roles/create-lxd/defaults/main.yml
@@ -22,7 +22,7 @@
 
 # For programatic generation of MAC addresses for LXD containers
 management_net_cidr: "10.1.0.0/24"
-management_net_bridge: "mgmtbr"
+management_net_bridge: "mgmtbridge"
 
 vtn_net_management_host_hwaddr_prefix: "06A6"
 vtn_net_management_host_cidr: "{{ management_net_cidr }}"