os-net-config/etc/os-net-config/samples/bond.yaml

network_config:
  -
     type: ovs_bridge
     name: br-ctlplane
     use_dhcp: true
     members:
       -
         type: ovs_bond
         name: bond1
         use_dhcp: true
         members:
           -
             type: interface
             name: em1
           -
             type: interface
             name: em2