This switch has 64 QSFP28 (40G/100G) ports, 2 SFP+ (1G/10G) ports
on Broadcom Tomahawk II chipset. CPU used in QFX5210-64C-S is
Intel Broadwell-DE. The machine has Redundant and hot-swappable
Power Supply (1+1) and also has Redundant and hot swappable fans (3+1).

Signed-off-by: Ciju Rajan K <[email protected]>

Signed-off-by: Ciju Rajan K <[email protected]>

This commit implements the following changes
 - Moving to optoe driver for sfp management
 - Removing the old sfp driver
 - Updating the port-config.ini to add the index field
 - Correction in sfputil.py to incorporate optoe driver
 - Platform support for 'poweroff' command

Signed-off-by: Ciju Rajan K <[email protected]>

Orchagent is crashing on the latest SONiC images. Issue #458
is raised to track the problem. Dynamic port breakout
commit 6f40933 introduced
this regression. One of the recommendation that we received
was to disable the loopback and mgmt ports in bcm config.
It was helpful in fixing the issue but not the ideal solution.
It works on qfx5210 as the loopback and management configurations
are not applicable.

While the orchagent crash is being debugged, we need this commit
to fix the issue in qfx5210 platform. This patch can be reversed
once the correct fix for the orchagent is identified.

Signed-off-by: Ciju Rajan K <[email protected]>