This is my experience too, but I'm now hitting this error on the hosted-engine install at the part where it registers the hypervisor as the first host in the engine:
2019-03-28 12:40:50,025Z INFO [org.ovirt.engine.core.bll.host.HostConnectivityChecker] (EE-ManagedThreadFactory-engine-Thread-1) [49f371c1] Engine managed to communicate with VDSM
agent on host 'virthyp04.virt.in.bmrc.ox.ac.uk' with address 'virthyp04.virt.in.bmrc.ox.ac.uk' ('db571f8a-fc85-40d3-b86f-c0038e3cd7e7')
2019-03-28 12:40:53,111Z WARN [org.ovirt.engine.core.bll.network.NetworkConfigurator] (EE-ManagedThreadFactory-engine-Thread-1) [49f371c1] Failed to find a valid interface for the
management network of host virthyp04.virt.in.bmrc.ox.ac.uk. If the interface ovirtmgmt is a bridge, it should be torn-down manually.
2019-03-28 12:40:53,111Z ERROR [org.ovirt.engine.core.bll.hostdeploy.InstallVdsInternalCommand] (EE-ManagedThreadFactory-engine-Thread-1) [49f371c1] Exception: org.ovirt.engine.cor
e.bll.network.NetworkConfigurator$NetworkConfiguratorException: Interface ovirtmgmt is invalid for management network
The host's ovirtmgmt network connection is a statically assigned IP on a VLAN on a bond, how should I be configuring this if not manually?