Tests should not run in official builds

[RikkiGibson]

Observed failing integration tests in the razor official build. https://dev.azure.com/dnceng/internal/_build/results?buildId=2193291&view=results

We should not be running tests in official builds. We need to update the pipeline definition accordingly.

Tagging @davidwengier who has updated this specific bit of the configuration most recently.

razor/azure-pipelines.yml

Lines 234 to 249 in ae0352c

	- script: eng\CIBuild.cmd
	-configuration $(_BuildConfig)
	-prepareMachine
	-test
	-nobl
	name: Run_Unit_Tests
	displayName: Run Unit Tests
	condition: succeeded()
	- script: eng\CIBuild.cmd
	-configuration $(_BuildConfig)
	-prepareMachine
	-integrationTest
	name: Run_Integration_Tests
	displayName: Run Integration Tests
	condition: succeeded()

[jaredpar]

Bit of context here. The official build pipeline should be about producing officially built binaries. It's purpose is not product validation. The PR and CI pipelines are our product validation pipelines and guard against us shipping bugs. These all run in parallel with our official builds so there is no loss of quality here. There are some types of failures that can occur on binaries that are officially built but those are exceedingly rare and virtually all of them are caught by the VS insertion process.

Running tests on official builds serves to slow down our release cadence and make it less reliable.

[davidwengier]

The mechanical side of this is ready to merge in #8617