[Simulators] Only infer simulator environment when there is no environment.
[Simulators] Only infer simulator environment when there is no environment.

harlanhaskins/swift,xwu/swift,tkremenek/swift,aschwaighofer/swift,hooman/swift,allevato/swift,allevato/swift,ahoppen/swift,gregomni/swift,stephentyrone/swift,atrick/swift,parkera/swift,jmgc/swift,airspeedswift/swift,CodaFi/swift,jckarter/swift,JGiola/swift,glessard/swift,allevato/swift,CodaFi/swift,harlanhaskins/swift,rudkx/swift,xwu/swift,roambotics/swift,hooman/swift,xwu/swift,nathawes/swift,jckarter/swift,CodaFi/swift,rudkx/swift,CodaFi/swift,JGiola/swift,jckarter/swift,allevato/swift,apple/swift,atrick/swift,jmgc/swift,rudkx/swift,airspeedswift/swift,ahoppen/swift,harlanhaskins/swift,nathawes/swift,JGiola/swift,parkera/swift,nathawes/swift,parkera/swift,stephentyrone/swift,gregomni/swift,aschwaighofer/swift,rudkx/swift,nathawes/swift,gregomni/swift,gregomni/swift,jckarter/swift,allevato/swift,benlangmuir/swift,stephentyrone/swift,apple/swift,allevato/swift,stephentyrone/swift,glessard/swift,apple/swift,aschwaighofer/swift,xwu/swift,CodaFi/swift,roambotics/swift,aschwaighofer/swift,apple/swift,airspeedswift/swift,roambotics/swift,jckarter/swift,stephentyrone/swift,parkera/swift,harlanhaskins/swift,benlangmuir/swift,glessard/swift,roambotics/swift,CodaFi/swift,nathawes/swift,gregomni/swift,rudkx/swift,parkera/swift,parkera/swift,harlanhaskins/swift,apple/swift,tkremenek/swift,jmgc/swift,tkremenek/swift,airspeedswift/swift,stephentyrone/swift,hooman/swift,nathawes/swift,JGiola/swift,glessard/swift,benlangmuir/swift,tkremenek/swift,gregomni/swift,harlanhaskins/swift,benlangmuir/swift,nathawes/swift,rudkx/swift,aschwaighofer/swift,hooman/swift,ahoppen/swift,xwu/swift,jmgc/swift,jmgc/swift,jmgc/swift,atrick/swift,apple/swift,roambotics/swift,jckarter/swift,xwu/swift,stephentyrone/swift,airspeedswift/swift,glessard/swift,jmgc/swift,atrick/swift,atrick/swift,hooman/swift,parkera/swift,ahoppen/swift,jckarter/swift,hooman/swift,tkremenek/swift,tkremenek/swift,ahoppen/swift,parkera/swift,airspeedswift/swift,JGiola/swift,tkremenek/swift,allevato/swift,JGiola/swift,roambotics/swift,aschwaighofer/swift,atrick/swift,aschwaighofer/swift,glessard/swift,airspeedswift/swift,xwu/swift,ahoppen/swift,hooman/swift,CodaFi/swift,benlangmuir/swift,harlanhaskins/swift,benlangmuir/swift