First part of work for the functionality that allows users to create an egress
proxy to access Tailnet services from within Kubernetes cluster workloads.
This PR allows creating an egress proxy that can access Tailscale services over HTTP only.
Updates tailscale/tailscale#8184
Signed-off-by: irbekrm <irbekrm@gmail.com>
Co-authored-by: Maisem Ali <maisem@tailscale.com>
Co-authored-by: Rhea Ghosh <rhea@tailscale.com>
Previously, the operator would only monitor Services and create
a Tailscale StatefulSet which acted as a L3 proxy which proxied
traffic inbound to the Tailscale IP onto the services ClusterIP.
This extends that functionality to also monitor Ingress resources
where the `ingressClassName=tailscale` and similarly creates a
Tailscale StatefulSet, acting as a L7 proxy instead.
Users can override the desired hostname by setting:
```
- tls
hosts:
- "foo"
```
Hostnames specified under `rules` are ignored as we only create a single
host. This is emitted as an event for users to see.
Fixes#7895
Signed-off-by: Maisem Ali <maisem@tailscale.com>
