GT-1561: Add basic Dell SONiC driver

[dougszumski]

Basic support for Dell SONiC switches for Arcus.

Build: https://github.com/stackhpc/stackhpc-kayobe-config/actions/runs/19330333096/job/55291529233
Patch: stackhpc/networking-generic-switch#130

[gemini-code-assist]

Code Review

This pull request introduces basic support for Dell SONiC switches by adding a new release note entry. It also updates the Kolla image tags for the neutron service across different operating system distributions. The changes appear to be straightforward and correctly implemented, aligning with the stated purpose of the pull request. No issues of medium, high, or critical severity were identified in the code changes.

[Alex-Welsh]

LGTM but is there an equivalent patch for 2025.1? I'm a bit concerned we'll forget about it, upgrade, and break things

[dougszumski]

LGTM but is there an equivalent patch for 2025.1? I'm a bit concerned we'll forget about it, upgrade, and break things

Thanks Alex - I am trying to attack it from the other side for later releases since there is a Dell Sonic driver upstream. I'll leave the ticket open until I've resolved it one way or another.