Comment 6 for bug 1531895

I have checked the following case:
1. I have used network template
2. I have used ovs provider for br-fw-admin
3. I have connected physical interface directly into br-fw-admin bridge

As result of application netconfig task I get appropriate network configuration is in place.

root@node-3:~# cat /etc/network/interfaces.d/ifcfg-br-fw-admin
auto br-fw-admin
allow-ovs br-fw-admin
iface br-fw-admin inet static
ovs_ports eth0
ovs_type OVSBridge