[Nvidia] [202205] Update syncd docker to use python version 3

[liorghub]

Why I did it

Python 2 is obsolete and no longer supported.

Work item tracking

• Microsoft ADO (number only):

How I did it

Change several packages installation commands in Nvidia syncd dockerfile to Python3 packages.
Change was done for regular image and for RPC image as well.

How to verify it

I tested several SDK API scripts manually (while all others are tested by SDK verification) and ran regression tests that run on RPC version.

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211
• 202305

Tested branch (Please provide the tested image version)

Description for the changelog

Link to config_db schema for YANG module changes

A picture of a cute animal (not mandatory but encouraged)

[dprital]

@yxieca , Can you please approve and merge ?

[yxieca]

@yxieca , Can you please approve and merge ?

@dprital can you elaborate why do we need to make this change when 202205 qualification is at the tail end? Are these commands broken in pyhon2? I fully support commands become python3 compliant or python3 only in the newer branches.

[liorghub]

@yxieca The initial plan was to remove python2 from Nvidia syncd container, but then I saw that Python2 exists in RPC container therefore I handled RPC container as well.
If you think it is not the right approach, may I create a different PR that contains only the changes in Nvidia syncd container?

[dprital]

@yxieca , Python2 is deprecated from NVIDIA (Mellanox) syncd so it was removed. This is the reason for this PR.

[yxieca]

@yxieca , Python2 is deprecated from NVIDIA (Mellanox) syncd so it was removed. This is the reason for this PR.

@liorghub @dprital I fully support removing python2 code. However, I don't think we should do it in 202205 at this point when qualification activity is done or almost done. This change can go to newer branches.

[dprital]

@yxieca , Python2 is deprecated from NVIDIA (Mellanox) syncd so it was removed. This is the reason for this PR.

@liorghub @dprital I fully support removing python2 code. However, I don't think we should do it in 202205 at this point when qualification activity is done or almost done. This change can go to newer branches.

@yxieca , OK. This is the PR for Master (and request to cherry pick to 202305 and 202311). Can you please Approve and merge ?

#17735