test: Use byte literals for Python3 compatibility
test: Use byte literals for Python3 compatibility

Because the stream is opened in binary mode. On Python3 that requires
the replace to also operate in binary mode.

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