feat(ip-query-server): lb of masters added to firewall use_local_firewall

[leblancmeneses]

feat(ip-query-server): lb of masters added to firewall when private_network false and create_load_balancer_for_the_kubernetes_api: true, use_local_firewall: true

Modified ip-query-server/app.rb to:
- Fetch load balancer IPs from Hetzner API (/v1/load_balancers)
- Filter to only include LBs whose targets include master nodes (by checking server IDs or label selectors with role=master)
- Include LB IPs in the "all" IPs response
- Added new ?role=loadbalancer filter option

How it filters LBs:

The code checks if a load balancer targets master nodes by:

1. Checking if target.type == 'server' and the server ID matches a master server ID
2. Checking if target.type == 'label_selector' and the selector contains role=master

This ensures that Istio ingress LBs and other unrelated load balancers are excluded - only the K8s API load balancer (which targets the 3 master nodes) is included.

Without this I could not connect to my cluster from my machine using kubectl

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud