Contributing to the Azure SDK

Resolve https://github.com/Azure/azure-sdk-tools/issues/2951 Here is the core testing pipeline: https://dev.azure.com/azure-sdk/public/_build/results?buildId=1735434&view=logs&j=76992fd1-2312-5fae-7c45-7baba86b87ae&t=76992fd1-2312-5fae-7c45-7baba86b87ae Here is the storage testing pipeline: https://dev.azure.com/azure-sdk/public/_build/results?buildId=1762139&view=results

@weshaggard Live tests run the target service only and the pipeline is not ready for the other tests. There are some test resources auth issues. https://dev.azure.com/azure-sdk/internal/_build/results?buildId=1769260&view=logs&j=9b84a2c2-369f-5cfc-6757-a840b36086a8&t=3d63f680-b278-5188-126f-c4fc35c087e2

If we want to test dependencies in live tests as well, we'd better to have a follow up PR.

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As we discussed offline, let's think about and plan for follow-on optimizations for when we expand this sharding out beyond NET core tests. Otherwise I think things are 99% in a great state here, so no reason to block the current functionality on approval. This is awesome!

@sima-zhu can you please add a link to the issue you are addressing with this PR? Also I think it will be helpful to add some documentation in a MD file so we understand what this is for and how someone might use it.

@JoshLove-msft @christothes @m-nash for your context this is the work to split up the core tests across multiple jobs to help parallelize running all the dependent tests. @ArthurMa1978 @m-nash we should use this same approach for the resource manager core pipeline to help it run more efficient.

/azp run net - core - tests

Azure Pipelines successfully started running 1 pipeline(s).

@sima-zhu lets also make sure the live test pipelines can benefit from this update.

/azp run net - core - tests

Azure Pipelines successfully started running 1 pipeline(s).

/azp run net - core - tests

Azure Pipelines failed to run 1 pipeline(s).

LGTM

/check-enforcer override

/check-enforcer override

/check-enforcer reset

The msbuild restore failed once we enable to the split.

https://dev.azure.com/azure-sdk/public/_build/results?buildId=1781872&view=logs&j=163c4b53-87cb-5052-8574-b52a51504003&t=ab588958-e161-539b-389a-ed0959fe3e4c