If you have a non-vlan external network in a
  separate interface, you will need to create an
  extra bridge to hook up the interface. This patch
  will allow the user to create:
    - br-isolated: for all the vlan networks
    - br-ex: for the native external network
JIRA: APEX-572
Change-Id: Ie76e2345ce75c77f2925c47451427ae41b6957d1
Signed-off-by: Ricardo Noriega <rnoriega@redhat.com>
             -
             {%- if not nets['external'][0]['enabled'] or nets['tenant']['nic_mapping'][role]['vlan'] is number or nets['storage']['nic_mapping'][role]['vlan'] is number or nets['api']['nic_mapping'][role]['vlan'] is number or  nets['external'][0]['nic_mapping'][role]['vlan'] is number %}
               type: ovs_bridge
+            {%- if nets['external'][0]['enabled'] and nets['external'][0]['nic_mapping'][role]['vlan'] == 'native' %}
+              name: br-isolated
+            {%- else %}
               name: {get_input: bridge_name}
+            {%- endif %}
               members:
                 -
                   type: interface