SKIP UPGRADE: Resolve "Update CI pipeline to handle multi-ingress gateways and Keycloak"

Package Owner Merge Request

No package changes. Only CI changes.

Additional Details

• when keycloak/all-packages label:
  • deploy k3d with metallb
  • Add passthrough ingress gateway and gateway
• add subnet for docker network create for metallb config.yaml
• remove keycloak admin.bigbang.dev certs

Known issues or expected conflicts?

Add any labels for affected packages so that they are deployed in CI. See example:

Once the MR is ready for review also add the status::review label.

Closes #666 (closed)