Implement nic teaming support

Openstack configdrive can use cloudbase-init to deploy baremental using ironic portgroup support similar to linux image. This is network_data.json

{
 "services": [],
 "networks": [
  {
   "network_id": "9406c5a2-e817-454f-a37e-5a7adecd34e8",
   "link": "tapd525008e-f0",
   "type": "ipv4_dhcp",
   "id": "network0"
  }
 ],
 "links": [
  {
   "bond_miimon": 100,
   "vif_id": "d525008e-f096-440c-9b5d-3d8eebc8f289",
   "bond_xmit_hash_policy": "layer2",
   "ethernet_mac_address": "90:1b:0e:0f:ff:60",
   "mtu": 1500,
   "bond_mode": "active-backup",
   "bond_links": [
    "0f89b795-d5e1-4237-9fb4-900911aa316b",
    "4a19c525-cad6-4cce-8221-08528b4ec48e"
   ],
   "type": "bond",
   "id": "tapd525008e-f0"
  },
  {
   "ethernet_mac_address": "90:1b:0e:0f:ff:60",
   "type": "phy",
   "id": "0f89b795-d5e1-4237-9fb4-900911aa316b"
  },
  {
   "ethernet_mac_address": "90:1b:0e:10:00:4d",
   "type": "phy",
   "id": "4a19c525-cad6-4cce-8221-08528b4ec48e"
  }
 ]
}

This is a duplicate of: https://blueprints.launchpad.net/cloudbase-init/+spec/json-network-config