Adds support for using Cumulus switches with NGS

Support for NCLU was added in Networking Generic Switch in the Zed
release[1].

Support for NVUE was added in Networking Generic Switch in the
2023.2 release[2].

[1] https://review.opendev.org/c/openstack/networking-generic-switch/+/743269
[2] https://review.opendev.org/c/openstack/networking-generic-switch/+/907551

Closes-Bug: #2083840

Change-Id: I973c6484ccd2a36990cf39df102e65be0376f08c