[servan] Wattmetre ports numerotation starts at 0.
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GitLab upgrade completed. Current version is 17.11.1. We now benefit from the features of the release 17.11.
Related to bug 14117.
Servan's wattmetre port were misnumbered.
Wattmetre port numerotation starts at 0, not at 1.
This was causing the check-wattmetre-loss
service to misread data, and think there was a mute port.