[DPB][YANG-models] extended regex pattern according to Mellanox systems speeds requirements

[vadymhlushko-mlnx]

- Why I did it

All Mellanox platforms require DPB modes with a specific set of speeds example

- How I did it

Extended regex pattern inside YANG model.
Supported platforms: SN2010, SN2100, SN2410, SN2700, SN3420, SN3700, SN3700C, SN3800, SN4600C, SN4410, SN4700

- How to verify it

Manually tested DPB CLI on all platform with all modes

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

• 201811
• 201911
• 202006
• 202012

- Description for the changelog

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

[liat-grozovik]

retest vs please

[liat-grozovik]

retest vsimage please

[vadymhlushko-mlnx]

retest vsimage please

[zhenggen-xu]

I think sonic-breakout_cfg.yang should be removed and backend should check the speed by platform.json, and not limit this into yang models. This is going to be accommodated by sonic-net/sonic-utilities#1020 and new PR(s). sonic-port.yang changes are fine.

@praveen-li

[liat-grozovik]

I think sonic-breakout_cfg.yang should be removed and backend should check the speed by platform.json, and not limit this into yang models. This is going to be accommodated by Azure/sonic-utilities#1020 and new PR(s). sonic-port.yang changes are fine.

@praveen-li

I believe this approach is better but it will take time until it will be available. Meanwhile we are blocked with many PRs.
As of that i think this change should be merged, later on it will be not relevant as you will do the changes mentioned above.
Can we proceed with this PR approval and merge?

[lguohan]

@zhenggen-xu , what are the new PRs you mentioned?

[zhenggen-xu]

OK, we can get this in, we will have new PR(s) to remove the sonic-breakout_cfg.yang and make the configMgmt logic to check the breakout mode instead.

[praveen-li]

Please add atleast a new test with it.

To add Test:
1.) Add Config at https://github.com/Azure/sonic-buildimage/blob/e52581e919c95e861cf630c9c7e1a840fc5e8ebd/src/sonic-yang-models/tests/yang_model_tests/yangTest.json#L2

2.) Add matching detail and expected error string at:
https://github.com/Azure/sonic-buildimage/blob/e52581e919c95e861cf630c9c7e1a840fc5e8ebd/src/sonic-yang-models/tests/yang_model_tests/test_yang_model.py#L52

[vadymhlushko-mlnx]

@praveen-li could you please review the last changes?

[praveen-li]

LGTM, note it may be possible that we may deprecate BRK_CFG Yang model later. Thx.

[vadymhlushko-mlnx]

Retest vsimage please