Octavia deployed with stsstack-bundles is now no-longer able to sucessfully create load balancers.

Attempting to deploy a loadbalancer with `openstack loadbalancer create --name lb --vip-subnet-id private_subnet` leads to the amphora getting stuck in `BOOTING` status and the loadbalancer in `PENDING_CREATE` status until it eventually flips to `ERROR`.

Checking the octavia logs in `/var/log/octavia/octavia-worker.log` on the `octavia/0` unit I see the following error repeated
```
2026-03-09 21:51:02.399 66214 WARNING octavia.amphorae.drivers.haproxy.rest_api_driver [-] Could not connect to instance. Retrying.: requests.exceptions.SSLError: HTTPSConnectionPool(host='fc00:db1b:10d3:f55:f816:3eff:fe89:b49f', port=9443): Max retries exceeded with url: // (Caused by SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1007)')))
```

Attempting to reach the endpoint directly shows
```
curl -X GET http://[fc00:db1b:10d3:f55:f816:3eff:fe89:b49f]:9443

Internal Server Error

Internal Server Error

```
## Reproduction
I have been able to reproduce the issue on noble-epoxy, noble-caracal, and jammy-caracal using the following setup.

From within the openstack directory

1. `./generate-bundle.sh -n octavia-doesnt-work --octavia -r caracal -s jammy --run`
2. When blocked in needing to unseal vault `./tools/vault-unseal-and-authorise.sh`
3. Once everything but octavia has unsettled `./configure && tools/upload_octavia_amphora_image.sh&&tools/configure_octavia.sh`
4. `source novarc`
5. Attempt to create a loadbalancer with `openstack loadbalancer create --name lb --vip-subnet-id private_subnet`
6. Absorb the errors and behavior defined above

## Root cause

I haven't yet been able to track down exactly what is causing the error, but bisecting shows that it was introduced in 9995d9a943d402e82315b88ab82b8b2a54d5b3ee. My guess is that `octavia-diskimage-retrofit` is not trying to build amphorae from noble images and there is some incompatability that keeps amphorae from working on noble. This matches my testing where I was unable to build a functioning amphora on noble by using ubuntu packages and only succeeded when building directly from the the upstream source.