Add CI telemetry for bootstrap build and test (#37396)
Add CI telemetry for bootstrap build and test (#37396)

This should allow us to query the azure event API to figure out if a particular run failed because of failure to build or test failure. This should help us categorize the causes of CI flakiness and drive it down.
nguerrera/roslyn,eriawan/roslyn,gafter/roslyn,tmat/roslyn,diryboy/roslyn,eriawan/roslyn,mavasani/roslyn,gafter/roslyn,KevinRansom/roslyn,eriawan/roslyn,panopticoncentral/roslyn,panopticoncentral/roslyn,mgoertz-msft/roslyn,nguerrera/roslyn,diryboy/roslyn,abock/roslyn,wvdd007/roslyn,sharwell/roslyn,ErikSchierboom/roslyn,physhi/roslyn,KirillOsenkov/roslyn,tannergooding/roslyn,wvdd007/roslyn,jmarolf/roslyn,AlekseyTs/roslyn,panopticoncentral/roslyn,jasonmalinowski/roslyn,jmarolf/roslyn,AmadeusW/roslyn,mgoertz-msft/roslyn,genlu/roslyn,shyamnamboodiripad/roslyn,dotnet/roslyn,ErikSchierboom/roslyn,aelij/roslyn,abock/roslyn,AmadeusW/roslyn,ErikSchierboom/roslyn,sharwell/roslyn,KevinRansom/roslyn,AlekseyTs/roslyn,agocke/roslyn,aelij/roslyn,bartdesmet/roslyn,davkean/roslyn,tmat/roslyn,davkean/roslyn,CyrusNajmabadi/roslyn,jmarolf/roslyn,physhi/roslyn,heejaechang/roslyn,brettfo/roslyn,CyrusNajmabadi/roslyn,dotnet/roslyn,reaction1989/roslyn,nguerrera/roslyn,agocke/roslyn,mavasani/roslyn,weltkante/roslyn,heejaechang/roslyn,shyamnamboodiripad/roslyn,heejaechang/roslyn,weltkante/roslyn,davkean/roslyn,physhi/roslyn,weltkante/roslyn,bartdesmet/roslyn,jasonmalinowski/roslyn,reaction1989/roslyn,bartdesmet/roslyn,jasonmalinowski/roslyn,tmat/roslyn,aelij/roslyn,stephentoub/roslyn,mavasani/roslyn,mgoertz-msft/roslyn,tannergooding/roslyn,gafter/roslyn,KirillOsenkov/roslyn,tannergooding/roslyn,abock/roslyn,genlu/roslyn,shyamnamboodiripad/roslyn,dotnet/roslyn,reaction1989/roslyn,AmadeusW/roslyn,stephentoub/roslyn,diryboy/roslyn,brettfo/roslyn,agocke/roslyn,brettfo/roslyn,KirillOsenkov/roslyn,AlekseyTs/roslyn,stephentoub/roslyn,genlu/roslyn,wvdd007/roslyn,KevinRansom/roslyn,CyrusNajmabadi/roslyn,sharwell/roslyn