Need to add "uplink-native-iface: <patch-between-br-fab-and-br-ex>"

[irathore]

While testing with Sridar for SVI/Vlan type support with opflex-agent (not openvswitch-agent) we found out that we need to add:

uplink-native-iface:

To:
/etc/opflex-agent-ovs/conf.d/*.conf

This will allow mixing of VLAN/opflex type networks using only opflex agents.