Merge branch 'review/json-per-lane'

Jakub Kicinski:

I got some feedback from users trying to integrate the SFP JSON
output to Meta's monitoring systems. The loss / fault signals
are currently a bit awkward to parse. This patch set changes
the format, is it still okay to merge it (as a fix?)
I think it's a worthwhile improvement, not sure how many people
depend on the current JSON format after 1 release..