Harvest should add support for Broadcom switches

Thanks @Pengng88 for raising!


### Discussed in https://github.com/NetApp/harvest/discussions/3742

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<sup>Originally posted by **Pengng88** July  7, 2025</sup>
We have hundreds of MetroCluster systems in our environment using a mix of Cisco and Broadcom switches. Is it possible to include Broadcom switches in Harvest monitoring as well?</div>