odlparent's custom.properties carries a bunch of configuration:

1. OVSDB configuration
2. ovsdb plugin supports both active and passive connections. It listens on port 6640 by default for Active connections.
   ovsdb.listenPort=6640

1. ovsdb creates Openflow nodes/bridges. This configuration configures the bridge's Openflow version.
2. default Openflow version = 1.0, we also support 1.3.
3. ovsdb.of.version=1.3

1. ovsdb can be configured with ml2 to perform l3 forwarding. The config below enables that functionality, which is
2. disabled by default.
3. ovsdb.l3.fwd.enabled=yes

1. ovsdb can be configured with ml2 to perform arp responder, enabled by default.
   ovsdb.l3.arp.responder.disabled=no

1. ovsdb can be configured with ml2 to perform l3 forwarding. When used in that scenario, the mac address of the default
2. gateway -on the external subnet- is expected to be resolved from its inet address. The config below overrides that
3. specific arp/neighDiscovery lookup.
4. ovsdb.l3gateway.mac=00:00:5E:00:02:01

We have multiple better configuration primitives other than properties and this is a logical inter-project dependency loop. Remove it.