feat(neutron): dynamic lookup network nodeId

[haseebsyed12]

Dynamic Network Node Trunk Discovery

Implements automatic discovery of the network node trunk ID via OVN Gateway agent, eliminating the need for manual configuration.

Problem

Previously, the network node trunk ID had to be hardcoded.

Solution

Added fetch_network_node_trunk_id() function that dynamically discovers the trunk by:

1. Get OVN Controller Gateway agent host UUID - Queries for alive OVN Controller Gateway agents
2. Finding gateway ports - Queries ports bound to the gateway agent host (filter ovn controller gateway agent host_uuid= port binding_host_id)
3. Locating the trunk - Finds the trunk whose parent port matches a gateway port (filter trunk Parent Port = filtered port_id)

Equivalent openstack cli commands network_trunk_id.sh

[cardoe]

Honestly the big O on this is gonna be costly. I would change this around to not get all trunks and walk them and call Ironic over and over again. You can call Ironic once for the gateway node to get its ID then get the ports owned by that ID. Then get the trunks owned by those ports. Now you've got a much smaller list to iterate over.

In the current code if we have 1000 trunk ports (which isn't even the possible max for a site) you would make 1000 calls to Ironic inside of a function that's expected to complete in 20 seconds or less.

[cardoe]

This is going to be insanely expensive as well as things scale as well. I'll have to look through what a better filter is going to be.

[haseebsyed12]

now querying PortBinding objects for each host