fix up installer build step
fix up installer build step

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