Comment 1 for bug 1639303

Manually adding these bridges once the unit is ready works:

[root@zs93k24 nova]# ovs-vsctl show
1f0b19e7-b780-4166-9b07-edb6078595f4
    ovs_version: "2.5.0"
[root@zs93k24 nova]# ovs-vsctl -- --may-exist add-br br-int
[root@zs93k24 nova]# ovs-vsctl -- --may-exist add-br br-data
[root@zs93k24 nova]# ovs-vsctl show
1f0b19e7-b780-4166-9b07-edb6078595f4
    Bridge br-int
        Port br-int
            Interface br-int
                type: internal
    Bridge br-data
        Port br-data
            Interface br-data
                type: internal
    ovs_version: "2.5.0"