display FC Port RX/TX power metrics in CLI and/or GUI (instead of livedump only)

When troubleshooting bad behaving (storage-) ports or FC links in a SAN environment, the corresponding RX/TX power/attenuation metrics of each SFP at both ends of the FC link are a very good indicator to determine which of the typical 3 involved components is the main suspect:
a) the FC port on the SAN Switch
or
b) the FC port of the SVC/Storwize/Flash Node's HBA
or
c) the SAN cable in between

While the RX/TX power metrics of SFPs in SAN Switches can easily be observed via the SAN Switch's CLI,
the corresponding SFP metrics from SVC/Storwize/Flashsystem are NOT public though. That information is currently stored (binary-)encoded in the (live-)dump data of a snap ONLY.

So in order to get to that SFP information, we have to create IBM Support Tickets everytime - just to get the livedump data reviewed and confirm whether the SFPs on SVC/Storwize/Flashsystem are in good shape or not. That is quite time consuming.

As a consequence, clients also sometimes start hasty reactions and go and replace the involved parts (SFPs, SAN cables) in a trial-and-error manner to isolate the issue - which may produce uneccessary costs and wastes time.

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By making these SFP metrics publicly available in the CLI and/or GUI (and not only in the livedump data), troubleshooting would be way more easy and efficient.

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