adoption_osp_deploy - os-net-config ironic

Set up the ironic network interface on osp controller nodes if the
network is defined in the scenario.

By default it will map to `nic3`, but it can be overriden in the
adoption scenario by setting `os_net_config_ironic_iface` in the
scenario defenition.

roles/adoption_osp_deploy/templates/os_net_config_overcloud.yml.j2

@@ -40,3 +40,19 @@ network_config:
     routes: []
     {% endif %}
   {% endfor %}
+{% if 'ironic' in _node_net.networks.keys () %}
+{% set net = _node_net.networks.ironic %}
+# ironic
+- type: linux_bridge
+  name: br-baremetal
+  addresses:
+  - ip_netmask: {{ net.ip_v4 }}/{{ net.prefix_length_v4 }}
+  use_dhcp: false
+  routes: []
+  members:
+  - type: interface
+    name: {{ _stack.os_net_config_ironic_iface |
+             default('nic3') }}
+    mtu: {{ net.mtu }}
+    primary: true
+{% endif %}