Add config power enable/disable command

[AnoopKamath]

What I did

High-speed modules nowadays use a significant amount of power, and having the ability to control each port's optical power enables the disabling of power to ports that are not in use, thus helping to reduce overall power consumption. This feature can also assist in recovering the link in the following scenarios without the need for a physical reseat or OIR.

Issue with optics power ON sequencing (ie. AOI 40G PLR4)

A buggy optic (rendering other ports / optics inaccessible)

Link goes down following a reboot

Link CRC error

Port flaps

An optic entering into a ghost debug mode (optics vendor specific) on one platform but same optic has no issue on another platform

How I did it

Add new config interface command

config interface transceiver power EthernetXX disable config interface transceiver power EthernetXX enable

How to verify it

HW team help probe the power pin and confirmed it to be disabled and enabled

Previous command output (if the output of a command-line utility has changed)

New command output (if the output of a command-line utility has changed)