Generating Octavia config for Antelope fails when still running Zed kolla-toolbox

Prior to upgrading to Antelope, it is helpful to generate the service config so we can check what changes will be made. This fails from Zed to Antelope as some attribute names in the Octavia role have been changed [1] to account for a newer version of the openstack.cloud collection.

```
TASK [octavia : Set octavia resources facts] *****************************************************************************************************************************************************************************************************************************************
Friday 12 January 2024 09:14:31 +0000 (0:00:01.977) 0:12:30.516 ********
fatal: [controller]: FAILED! =>
  msg: |-
    The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'networks'. 'dict object' has no attribute 'networks'

    The error appears to be in '/path/to/home/venvs/kolla-ansible/share/kolla-ansible/ansible/roles/octavia/tasks/get_resources_info.yml': line 72, column 3, but may
    be elsewhere in the file depending on the exact syntax problem.

    The offending line appears to be:

    - name: Set octavia resources facts
      ^ here
```

[1] https://review.opendev.org/c/openstack/kolla-ansible/+/878209