Goal:

• The octavia-operator supports only a flat provider network as management network
• In some use cases, we might allow the admin to specific a vlan tenant network
• the admin would use new fields (network type, physical network, segment) in the Spec to override the default settings

Acceptance Criteria:

• octavia-operator can configure a vlan network with the provided settings
• the octavia services can communicate with a networker node through this vlan network 

Workaround:

• in case customers need to use a vlan provider network before the completion of this epic, a workaround is available, they can create a vlan provider network (named octavia-provider-net) before enabling octavia-operator. Then, the octavia-operator will create the associated resources (subnet and router)

 openstack network create \
    --provider-network-type vlan \
    --provider-physical-network datacentre \
    --provider-segment 23 \
    [--availability-zone-hint zone-2] \
    --external \
    octavia-provider-net

Note that vlan 23 must exist on the networker nodes.