[buildbot-script] use bash with -o pipefail for improved error detection
[buildbot-script] use bash with -o pipefail for improved error detection

Swift SVN r10051

Ivacker/swift,Ivacker/swift,alblue/swift,roambotics/swift,shajrawi/swift,brentdax/swift,austinzheng/swift,jopamer/swift,MukeshKumarS/Swift,IngmarStein/swift,gregomni/swift,ahoppen/swift,dduan/swift,johnno1962d/swift,xwu/swift,jtbandes/swift,stephentyrone/swift,codestergit/swift,xwu/swift,JGiola/swift,harlanhaskins/swift,danielmartin/swift,OscarSwanros/swift,SwiftAndroid/swift,tkremenek/swift,xedin/swift,jckarter/swift,shajrawi/swift,kusl/swift,tardieu/swift,sdulal/swift,frootloops/swift,arvedviehweger/swift,tardieu/swift,codestergit/swift,danielmartin/swift,dduan/swift,return/swift,jopamer/swift,gottesmm/swift,shajrawi/swift,return/swift,codestergit/swift,sdulal/swift,alblue/swift,shahmishal/swift,gribozavr/swift,johnno1962d/swift,atrick/swift,tardieu/swift,milseman/swift,aschwaighofer/swift,glessard/swift,hooman/swift,uasys/swift,LeoShimonaka/swift,kentya6/swift,JGiola/swift,stephentyrone/swift,IngmarStein/swift,shahmishal/swift,manavgabhawala/swift,bitjammer/swift,tinysun212/swift-windows,hooman/swift,tjw/swift,gmilos/swift,bitjammer/swift,hooman/swift,kusl/swift,parkera/swift,hughbe/swift,gregomni/swift,ben-ng/swift,hughbe/swift,swiftix/swift,KrishMunot/swift,austinzheng/swift,tjw/swift,milseman/swift,JaSpa/swift,Jnosh/swift,jopamer/swift,kstaring/swift,kentya6/swift,shahmishal/swift,shahmishal/swift,devincoughlin/swift,cbrentharris/swift,modocache/swift,MukeshKumarS/Swift,CodaFi/swift,natecook1000/swift,sdulal/swift,KrishMunot/swift,CodaFi/swift,SwiftAndroid/swift,milseman/swift,JGiola/swift,kusl/swift,kentya6/swift,practicalswift/swift,swiftix/swift.old,dduan/swift,johnno1962d/swift,tinysun212/swift-windows,JaSpa/swift,brentdax/swift,ahoppen/swift,SwiftAndroid/swift,roambotics/swift,lorentey/swift,tjw/swift,felix91gr/swift,MukeshKumarS/Swift,OscarSwanros/swift,harlanhaskins/swift,Ivacker/swift,johnno1962d/swift,nathawes/swift,aschwaighofer/swift,shahmishal/swift,devincoughlin/swift,zisko/swift,khizkhiz/swift,bitjammer/swift,practicalswift/swift,sdulal/swift,jckarter/swift,uasys/swift,uasys/swift,Ivacker/swift,therealbnut/swift,modocache/swift,parkera/swift,hooman/swift,ahoppen/swift,atrick/swift,swiftix/swift,shahmishal/swift,frootloops/swift,huonw/swift,xedin/swift,rudkx/swift,felix91gr/swift,JGiola/swift,airspeedswift/swift,jtbandes/swift,slavapestov/swift,nathawes/swift,codestergit/swift,zisko/swift,practicalswift/swift,emilstahl/swift,arvedviehweger/swift,swiftix/swift.old,LeoShimonaka/swift,practicalswift/swift,xedin/swift,tjw/swift,tkremenek/swift,return/swift,hughbe/swift,mightydeveloper/swift,rudkx/swift,arvedviehweger/swift,deyton/swift,gregomni/swift,frootloops/swift,stephentyrone/swift,khizkhiz/swift,ben-ng/swift,kperryua/swift,kentya6/swift,ken0nek/swift,alblue/swift,aschwaighofer/swift,therealbnut/swift,russbishop/swift,mightydeveloper/swift,manavgabhawala/swift,JaSpa/swift,jmgc/swift,djwbrown/swift,ken0nek/swift,hughbe/swift,tinysun212/swift-windows,nathawes/swift,khizkhiz/swift,slavapestov/swift,IngmarStein/swift,LeoShimonaka/swift,rudkx/swift,kperryua/swift,gottesmm/swift,gribozavr/swift,shajrawi/swift,sschiau/swift,apple/swift,khizkhiz/swift,ben-ng/swift,adrfer/swift,russbishop/swift,Jnosh/swift,modocache/swift,manavgabhawala/swift,milseman/swift,apple/swift,hooman/swift,huonw/swift,allevato/swift,zisko/swift,alblue/swift,natecook1000/swift,mightydeveloper/swift,amraboelela/swift,CodaFi/swift,devincoughlin/swift,milseman/swift,tkremenek/swift,stephentyrone/swift,djwbrown/swift,sschiau/swift,SwiftAndroid/swift,russbishop/swift,jmgc/swift,IngmarStein/swift,lorentey/swift,jopamer/swift,arvedviehweger/swift,amraboelela/swift,MukeshKumarS/Swift,austinzheng/swift,danielmartin/swift,airspeedswift/swift,JaSpa/swift,harlanhaskins/swift,jckarter/swift,cbrentharris/swift,practicalswift/swift,shahmishal/swift,deyton/swift,manavgabhawala/swift,gmilos/swift,huonw/swift,dreamsxin/swift,SwiftAndroid/swift,shajrawi/swift,bitjammer/swift,mightydeveloper/swift,roambotics/swift,kperryua/swift,nathawes/swift,kusl/swift,KrishMunot/swift,LeoShimonaka/swift,gribozavr/swift,austinzheng/swift,khizkhiz/swift,shajrawi/swift,jtbandes/swift,russbishop/swift,apple/swift,kperryua/swift,JaSpa/swift,ken0nek/swift,Ivacker/swift,adrfer/swift,codestergit/swift,jmgc/swift,JaSpa/swift,KrishMunot/swift,arvedviehweger/swift,kusl/swift,karwa/swift,sschiau/swift,ken0nek/swift,jtbandes/swift,nathawes/swift,LeoShimonaka/swift,CodaFi/swift,ben-ng/swift,jckarter/swift,jopamer/swift,JaSpa/swift,glessard/swift,kusl/swift,frootloops/swift,sschiau/swift,allevato/swift,austinzheng/swift,OscarSwanros/swift,gribozavr/swift,OscarSwanros/swift,huonw/swift,amraboelela/swift,sschiau/swift,therealbnut/swift,kstaring/swift,zisko/swift,gribozavr/swift,swiftix/swift.old,felix91gr/swift,sschiau/swift,sdulal/swift,alblue/swift,milseman/swift,modocache/swift,slavapestov/swift,mightydeveloper/swift,danielmartin/swift,arvedviehweger/swift,jckarter/swift,IngmarStein/swift,Jnosh/swift,hooman/swift,karwa/swift,glessard/swift,lorentey/swift,felix91gr/swift,roambotics/swift,jtbandes/swift,hughbe/swift,rudkx/swift,deyton/swift,emilstahl/swift,aschwaighofer/swift,sschiau/swift,xwu/swift,modocache/swift,johnno1962d/swift,slavapestov/swift,emilstahl/swift,djwbrown/swift,sdulal/swift,natecook1000/swift,natecook1000/swift,airspeedswift/swift,manavgabhawala/swift,shajrawi/swift,swiftix/swift,deyton/swift,mightydeveloper/swift,slavapestov/swift,karwa/swift,ken0nek/swift,kentya6/swift,xwu/swift,kentya6/swift,parkera/swift,return/swift,gmilos/swift,cbrentharris/swift,manavgabhawala/swift,return/swift,LeoShimonaka/swift,kusl/swift,bitjammer/swift,tinysun212/swift-windows,tkremenek/swift,allevato/swift,stephentyrone/swift,airspeedswift/swift,emilstahl/swift,glessard/swift,huonw/swift,mightydeveloper/swift,swiftix/swift.old,lorentey/swift,apple/swift,swiftix/swift,felix91gr/swift,xedin/swift,lorentey/swift,cbrentharris/swift,sschiau/swift,parkera/swift,swiftix/swift,karwa/swift,glessard/swift,shajrawi/swift,tinysun212/swift-windows,emilstahl/swift,ahoppen/swift,tinysun212/swift-windows,benlangmuir/swift,calebd/swift,arvedviehweger/swift,nathawes/swift,uasys/swift,SwiftAndroid/swift,frootloops/swift,allevato/swift,swiftix/swift,roambotics/swift,gribozavr/swift,tkremenek/swift,amraboelela/swift,codestergit/swift,harlanhaskins/swift,slavapestov/swift,uasys/swift,karwa/swift,khizkhiz/swift,aschwaighofer/swift,deyton/swift,milseman/swift,tinysun212/swift-windows,xwu/swift,hughbe/swift,dduan/swift,tardieu/swift,hooman/swift,JGiola/swift,sdulal/swift,dduan/swift,danielmartin/swift,parkera/swift,atrick/swift,therealbnut/swift,felix91gr/swift,amraboelela/swift,OscarSwanros/swift,cbrentharris/swift,practicalswift/swift,gmilos/swift,kstaring/swift,kentya6/swift,gregomni/swift,dreamsxin/swift,gottesmm/swift,xedin/swift,khizkhiz/swift,ken0nek/swift,CodaFi/swift,brentdax/swift,gmilos/swift,sdulal/swift,brentdax/swift,dduan/swift,xwu/swift,swiftix/swift.old,gottesmm/swift,kstaring/swift,tjw/swift,allevato/swift,OscarSwanros/swift,huonw/swift,calebd/swift,xedin/swift,Jnosh/swift,airspeedswift/swift,apple/swift,tkremenek/swift,harlanhaskins/swift,benlangmuir/swift,mightydeveloper/swift,parkera/swift,cbrentharris/swift,devincoughlin/swift,karwa/swift,lorentey/swift,adrfer/swift,CodaFi/swift,alblue/swift,atrick/swift,Ivacker/swift,jckarter/swift,rudkx/swift,felix91gr/swift,ben-ng/swift,karwa/swift,xedin/swift,return/swift,adrfer/swift,zisko/swift,tjw/swift,Jnosh/swift,swiftix/swift.old,jmgc/swift,benlangmuir/swift,allevato/swift,gregomni/swift,johnno1962d/swift,devincoughlin/swift,djwbrown/swift,therealbnut/swift,natecook1000/swift,LeoShimonaka/swift,russbishop/swift,natecook1000/swift,kentya6/swift,MukeshKumarS/Swift,rudkx/swift,ben-ng/swift,KrishMunot/swift,Jnosh/swift,jmgc/swift,aschwaighofer/swift,jopamer/swift,harlanhaskins/swift,kstaring/swift,jmgc/swift,lorentey/swift,calebd/swift,frootloops/swift,uasys/swift,IngmarStein/swift,Jnosh/swift,devincoughlin/swift,ahoppen/swift,calebd/swift,parkera/swift,gottesmm/swift,benlangmuir/swift,jmgc/swift,brentdax/swift,SwiftAndroid/swift,emilstahl/swift,apple/swift,stephentyrone/swift,atrick/swift,austinzheng/swift,jtbandes/swift,lorentey/swift,kusl/swift,manavgabhawala/swift,airspeedswift/swift,deyton/swift,MukeshKumarS/Swift,xwu/swift,atrick/swift,practicalswift/swift,tardieu/swift,benlangmuir/swift,jckarter/swift,bitjammer/swift,hughbe/swift,modocache/swift,ben-ng/swift,modocache/swift,natecook1000/swift,adrfer/swift,kstaring/swift,benlangmuir/swift,slavapestov/swift,tardieu/swift,austinzheng/swift,IngmarStein/swift,parkera/swift,amraboelela/swift,allevato/swift,aschwaighofer/swift,nathawes/swift,adrfer/swift,shahmishal/swift,gmilos/swift,bitjammer/swift,LeoShimonaka/swift,djwbrown/swift,harlanhaskins/swift,xedin/swift,Ivacker/swift,calebd/swift,russbishop/swift,ahoppen/swift,swiftix/swift.old,djwbrown/swift,cbrentharris/swift,tkremenek/swift,emilstahl/swift,huonw/swift,russbishop/swift,tjw/swift,therealbnut/swift,dduan/swift,glessard/swift,swiftix/swift,adrfer/swift,stephentyrone/swift,airspeedswift/swift,uasys/swift,danielmartin/swift,gregomni/swift,CodaFi/swift,return/swift,Ivacker/swift,cbrentharris/swift,alblue/swift,calebd/swift,zisko/swift,OscarSwanros/swift,calebd/swift,brentdax/swift,MukeshKumarS/Swift,gottesmm/swift,KrishMunot/swift,ken0nek/swift,gribozavr/swift,kperryua/swift,roambotics/swift,kperryua/swift,brentdax/swift,gottesmm/swift,practicalswift/swift,KrishMunot/swift,gribozavr/swift,frootloops/swift,kperryua/swift,jopamer/swift,djwbrown/swift,zisko/swift,amraboelela/swift,devincoughlin/swift,jtbandes/swift,gmilos/swift,swiftix/swift.old,emilstahl/swift,tardieu/swift,therealbnut/swift,karwa/swift,JGiola/swift,johnno1962d/swift,kstaring/swift,danielmartin/swift,codestergit/swift,devincoughlin/swift,deyton/swift