Add support for Gude 8311 PDUs

[Jay2k1]

This minor patch adds support for the Gude 8311 PDU model, which appears to be the successor of the 8310 and has a slightly different OID number (62 instead of 27). Checkmk already supports the 8310 out-of-the-box, but the 8311 is unsupported as of today.

The added code is a copy of the existing Gude 8310 section, changing the model name and replacing the .27 by .62 in the OID (once in detect, once in fetch).

[github-actions]

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[Jay2k1]

I have read the CLA Document and I hereby sign the CLA or my organization already has a signed CLA.

[github-actions]

Thank you for your contribution. This pull request has been marked as stale as it has not passed the automated tests and there was no activity for the last 14 days.
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