Ignore OVN Bridge MAC net for inventory generation

The OVN Bridge MAC network causes the inventory generation
to be skipped due to MissingMandatoryNeutronResourceTag.
This nework should be ignored here.

Related: blueprint network-data-v2-ports
Partial-Bug: #1928469
Change-Id: Idb557d0c6c4356385cb05b2041b0bdaa5485367a

tripleo_common/constants.py

@@ -229,3 +229,7 @@ PER_STEP_TASKS = {
 }
 
 INVENTORY_NETWORK_CONFIG_FILE = 'inventory-network-config.yaml'
+
+# Hard coded name in:
+#   tripleo_ansible/ansible_plugins/modules/tripleo_ovn_mac_addresses.py
+OVN_MAC_ADDR_NET_NAME = 'ovn_mac_addr_net'

tripleo_common/inventory.py

@@ -192,6 +192,10 @@ class NeutronData(object):
         mandatory_tags = {'tripleo_network_name'}
         networks_by_id = {}
         for net in self.networks:
+            # Don't include the OVN Bridge MAC address net
+            if net.name == constants.OVN_MAC_ADDR_NET_NAME:
+                continue
+
             tags = self._tags_to_dict(net.tags)
             # In case of missing required tags, raise an error.
             # neutron is useless as a inventory source in this case.