Add XcvrApi for configuring application 0

[noaOrMlnx]

Description

When NOS configures the CMIS modules, we need to be aware to a case where some of the lanes are disabled.
According to CMIS spec, in that case, an application 0 is needed to make sure all disabled lanes are zeroed.
This function sets "0" in all lanes before configuring the module, so de-activated lanes will remain with 0.

Motivation and Context

This was done according to CMIS specification document.

How Has This Been Tested?

This addition to CMIS thread was tested with a CMIS active cable, with only 4 active lanes (and 4 de-active).
We made sure the link is up, right places are zeroed, and have traffic.

Additional Information (Optional)

[prgeor]

@noaOrMlnx please check this API (decommsion_all_datapaths) which is invoked by CMIS manager thread at the beginning of configuring any speed to put all lanes with 0 application to start with

sonic-platform-common/sonic_platform_base/sonic_xcvr/api/public/cmis.py

Line 2126 in cd6a5a4

def decommission_all_datapaths(self):

[noaOrMlnx]

@prgeor thanks, I checked it and indeed this works and solved the issue. I will close 2 relevant PRs.