Description.txt

In order for this to work on Ubuntu the renderer must be networkd. 
This will cause gnome to think your network is disconnected, I guess I need to do a pill request to fix that. :)

Some configurations depend on previous settings so be careful if you remove the bond from the config, just swap the adaptor name in for the bridge.

All networks have vlan1 so this will work even if all you have is a dumb switch. 

netplan.yaml

network:
  version: 2
  renderer: networkd
  ethernets:
    enp0s25:
      dhcp4: true
      dhcp6: false
      optional: false
      wakeonlan: true
    enp2s0f0:
      dhcp4: false
      dhcp6: false
      optional: true
    enp2s0f1:
      dhcp4: false
      dhcp6: false
      optional: false
    enp2s0f2:
      dhcp4: false
      dhcp6: false
      optional: false
    enp2s0f3:
      dhcp4: false
      dhcp6: false
      optional: false
    enp1s0f0:
      dhcp4: false
      dhcp6: false
      optional: false
    enp1s0f0:
      dhcp4: false
      dhcp6: false
      optional: false
  bonds:
    bondlan:
      interfaces: [enp2s0f0, enp2s0f1]
      dhcp4: false
      dhcp6: false
      parameters:
        mode: 802.3ad
        lacp-rate: fast
        ad-select: bandwidth
        mii-monitor-interval: 100
        min-links: 1
        fail-over-mac-policy: none
  bridges:
    br10:
      interfaces: [ mgmt.10 ]
      dhcp4: false
      dhcp6: false
      addresses: []
      parameters:
        stp: false
        priority: 65535
    br20:
      interfaces: [ bondlan ]
      dhcp4: false
      dhcp6: false
      dhcp4-overrides:
        route-metric: 50
      addresses: [10.0.20.10/23]
      routes:
        - to: default
          via: 10.0.21.254
      nameservers:
        addresses: [10.0.20.12,10.0.20.2]
      parameters:
        stp: false
        priority: 65535
    br30:
      interfaces: [ guest.30 ]
      dhcp4: false
      dhcp6: false
      addresses: []
      parameters:
        stp: false
        priority: 65535
    br40:
      interfaces: [ security.40 ]
      dhcp4: false
      dhcp6: false
      addresses: []
      parameters:
        stp: false
        priority: 65535
    br50:
      interfaces: [ local.50 ]
      dhcp4: false
      dhcp6: false
      addresses: []
      parameters:
        stp: false
        priority: 65535
  vlans:
    mgmt.10:
      id: 10
      link: bondlan
      dhcp4: false
      dhcp6: false
    guest.30:
      id: 30
      link: bondlan
      dhcp4: false
      dhcp6: false
    security.40:
      id: 40
      link: bondlan
      dhcp4: false
      dhcp6: false
    local.50:
      id: 50
      link: bondlan
      dhcp4: false
      dhcp6: false