chore: add LB policy
What
Add optional LB policy to create rules for restricting traffic to Cloudflare IPs.
Why
For https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/2719.
Add optional LB policy to create rules for restricting traffic to Cloudflare IPs.
For https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/2719.