Add incremental QOS config tests

[isabelmsft]

Description of PR

This PR will remain in draft mode until YANG model validation errors are resolved. Presently, the test case only runs successfully when the following YANG models are manually removed:
sonic-bgp-neighbor.yang
sonic-device_metadata.yang
sonic-feature.yang
sonic-flex_counter.yang
sonic-scheduler.yang
sonic-queue.yang
sonic-buffer-port-egress-profile-list.yang
sonic-buffer-port-ingress-profile-list.yang

Summary: Testcases of incremental qos configs for generic updater apply-patch
Fixes # (issue)

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Back port request

• 201911

Approach

What is the motivation for this PR?

End to End test support for Generic Updater apply-patch

How did you do it?

How did you verify/test it?

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation

[qiluo-msft]

PR description has a link to a personal forked repo. Could you use the link in Azure repo and master branch?

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In reply to: 954437006

[qiluo-msft]

verifyOrchagentRunningOrAssert

Besides checking patch applied, verify orchagent process. Do we need to verify more to make sure new config are consumed? This should be a question to the feature owner. #Pending

[isabelmsft]

Yes, there is a relevant script we may use that needs to be validated before using in our test. I will follow up with Neetha.

[wangxin]

@isabelmsft In PR description, this change is related with YANG model. Is it OK to merge this PR now? Will it fail on 202012 or master branch?

[isabelmsft]

@isabelmsft In PR description, this change is related with YANG model. Is it OK to merge this PR now? Will it fail on 202012 or master branch?

Yes, it's okay to merge now since Mohamed added the option to ignore problematic YANG models. \

Neetha has now shared the formulas for calculating proper field values (as opposed to the arbitrary values used in this PR). I have finished updating the test with proper field values. After merging this, I will open a new PR which uses the formulas so that those changes are easier to distinguish and review.