Don't create xunit dumps when the process exits
Don't create xunit dumps when the process exits

The -t flag includes clean process exits, which aren't useful to dump.
This means any time we have an actual problem in Jenkins, you have
a bunch of dump files that are useless to you.

CyrusNajmabadi/roslyn,AmadeusW/roslyn,eriawan/roslyn,Hosch250/roslyn,tmeschter/roslyn,bartdesmet/roslyn,lorcanmooney/roslyn,wvdd007/roslyn,panopticoncentral/roslyn,sharwell/roslyn,jcouv/roslyn,bkoelman/roslyn,Giftednewt/roslyn,mavasani/roslyn,wvdd007/roslyn,tmeschter/roslyn,mavasani/roslyn,AdamSpeight2008/roslyn-AdamSpeight2008,abock/roslyn,tmat/roslyn,tmat/roslyn,aelij/roslyn,cston/roslyn,davkean/roslyn,dotnet/roslyn,tannergooding/roslyn,mattscheffer/roslyn,nguerrera/roslyn,stephentoub/roslyn,VSadov/roslyn,gafter/roslyn,bartdesmet/roslyn,cston/roslyn,eriawan/roslyn,diryboy/roslyn,mgoertz-msft/roslyn,mattscheffer/roslyn,aelij/roslyn,DustinCampbell/roslyn,jmarolf/roslyn,xasx/roslyn,dpoeschl/roslyn,genlu/roslyn,AlekseyTs/roslyn,AdamSpeight2008/roslyn-AdamSpeight2008,Hosch250/roslyn,ErikSchierboom/roslyn,AlekseyTs/roslyn,reaction1989/roslyn,physhi/roslyn,jamesqo/roslyn,Hosch250/roslyn,KirillOsenkov/roslyn,heejaechang/roslyn,cston/roslyn,VSadov/roslyn,AmadeusW/roslyn,dpoeschl/roslyn,CyrusNajmabadi/roslyn,Giftednewt/roslyn,tannergooding/roslyn,DustinCampbell/roslyn,mgoertz-msft/roslyn,ErikSchierboom/roslyn,diryboy/roslyn,mattscheffer/roslyn,diryboy/roslyn,agocke/roslyn,genlu/roslyn,heejaechang/roslyn,nguerrera/roslyn,reaction1989/roslyn,ErikSchierboom/roslyn,CyrusNajmabadi/roslyn,xasx/roslyn,Giftednewt/roslyn,MichalStrehovsky/roslyn,agocke/roslyn,weltkante/roslyn,physhi/roslyn,dotnet/roslyn,lorcanmooney/roslyn,abock/roslyn,lorcanmooney/roslyn,dotnet/roslyn,OmarTawfik/roslyn,bkoelman/roslyn,mavasani/roslyn,swaroop-sridhar/roslyn,jasonmalinowski/roslyn,aelij/roslyn,jamesqo/roslyn,AmadeusW/roslyn,DustinCampbell/roslyn,jamesqo/roslyn,swaroop-sridhar/roslyn,bartdesmet/roslyn,stephentoub/roslyn,KirillOsenkov/roslyn,AdamSpeight2008/roslyn-AdamSpeight2008,jcouv/roslyn,jasonmalinowski/roslyn,davkean/roslyn,MichalStrehovsky/roslyn,shyamnamboodiripad/roslyn,physhi/roslyn,xasx/roslyn,jasonmalinowski/roslyn,davkean/roslyn,OmarTawfik/roslyn,eriawan/roslyn,stephentoub/roslyn,shyamnamboodiripad/roslyn,panopticoncentral/roslyn,paulvanbrenk/roslyn,paulvanbrenk/roslyn,tmat/roslyn,KevinRansom/roslyn,wvdd007/roslyn,KirillOsenkov/roslyn,sharwell/roslyn,MichalStrehovsky/roslyn,gafter/roslyn,sharwell/roslyn,jcouv/roslyn,weltkante/roslyn,weltkante/roslyn,shyamnamboodiripad/roslyn,gafter/roslyn,VSadov/roslyn,reaction1989/roslyn,brettfo/roslyn,jmarolf/roslyn,AlekseyTs/roslyn,mgoertz-msft/roslyn,paulvanbrenk/roslyn,bkoelman/roslyn,nguerrera/roslyn,panopticoncentral/roslyn,genlu/roslyn,jmarolf/roslyn,abock/roslyn,brettfo/roslyn,KevinRansom/roslyn,heejaechang/roslyn,brettfo/roslyn,KevinRansom/roslyn,dpoeschl/roslyn,agocke/roslyn,tannergooding/roslyn,OmarTawfik/roslyn,tmeschter/roslyn,swaroop-sridhar/roslyn