I believe they updated the vdsm configuration part.
You just need to configure the bond on the host via the cockpit.
For some reason, I needed to configure an IP on the bond, otherwise the bond kept
deactivating and I lost connection with the host.
Then, you create the vlan interface on top of the bond interface with the IP of your
management network.
When you add the host to the engine, the ovirtmgmt interface will be on top of the vlan
interface of your management network.
Below is the configuration flow:
IP 10.0.0.1/24 - Your host MGMT Network (ovirtmgmt)
IF Slave1 (Switch1) + IF Slave2 (Switch2) ---> (IF bond0 - IP 172.16.0.1/32) --->
(IF bond0.100 - IP 10.0.0.1/24 (VLAN 100)) ---> (IF ovirtmgmt)