bump app-validator: fix prefetch -> stream because of requests upgrade (bug 864075)
bump app-validator: fix prefetch -> stream because of requests upgrade (bug 864075)

Joergen/zamboni,muffinresearch/addons-server,mrrrgn/olympia,clouserw/zamboni,kumar303/zamboni,wagnerand/addons-server,shahbaz17/zamboni,clouserw/zamboni,eviljeff/zamboni,johancz/olympia,mdaif/olympia,andymckay/addons-server,Joergen/zamboni,diox/olympia,ngokevin/zamboni,kumar303/olympia,robhudson/zamboni,johancz/olympia,robhudson/zamboni,harikishen/addons-server,crdoconnor/olympia,aviarypl/mozilla-l10n-addons-server,ingenioustechie/zamboni,robhudson/zamboni,Revanth47/addons-server,Prashant-Surya/addons-server,yfdyh000/olympia,Witia1/olympia,crdoconnor/olympia,magopian/olympia,koehlermichael/olympia,Joergen/olympia,psiinon/addons-server,spasovski/zamboni,mozilla/zamboni,mrrrgn/olympia,mdaif/olympia,harry-7/addons-server,crdoconnor/olympia,wagnerand/addons-server,kmaglione/olympia,psiinon/addons-server,mrrrgn/olympia,andymckay/olympia,mstriemer/addons-server,andymckay/zamboni,jpetto/olympia,kumar303/addons-server,Prashant-Surya/addons-server,Joergen/olympia,mozilla/olympia,jamesthechamp/zamboni,mstriemer/olympia,atiqueahmedziad/addons-server,yfdyh000/olympia,Joergen/zamboni,muffinresearch/addons-server,elysium001/zamboni,kumar303/olympia,aviarypl/mozilla-l10n-addons-server,diox/zamboni,johancz/olympia,wagnerand/zamboni,crdoconnor/olympia,beni55/olympia,andymckay/addons-server,elysium001/zamboni,mozilla/zamboni,atiqueahmedziad/addons-server,tsl143/zamboni,mstriemer/olympia,wagnerand/olympia,mudithkr/zamboni,tsl143/addons-server,spasovski/zamboni,kumar303/addons-server,magopian/olympia,mstriemer/olympia,wagnerand/addons-server,spasovski/zamboni,washort/zamboni,Joergen/zamboni,Hitechverma/zamboni,eviljeff/olympia,muffinresearch/addons-server,mrrrgn/olympia,Revanth47/addons-server,magopian/olympia,luckylavish/zamboni,shahbaz17/zamboni,eviljeff/zamboni,eviljeff/zamboni,mozilla/addons-server,jasonthomas/zamboni,mstriemer/zamboni,SuriyaaKudoIsc/olympia,Nolski/olympia,Witia1/olympia,koehlermichael/olympia,wagnerand/addons-server,yfdyh000/olympia,mstriemer/zamboni,mudithkr/zamboni,elysium001/zamboni,diox/olympia,koehlermichael/olympia,jasonthomas/zamboni,lavish205/olympia,kumar303/olympia,mdaif/olympia,tsl143/zamboni,Jobava/zamboni,clouserw/zamboni,SuriyaaKudoIsc/olympia,bqbn/addons-server,kumar303/olympia,koehlermichael/olympia,jamesthechamp/zamboni,ingenioustechie/zamboni,anaran/olympia,Revanth47/addons-server,bqbn/addons-server,bqbn/addons-server,ayushagrawal288/zamboni,jasonthomas/zamboni,Joergen/zamboni,mstriemer/addons-server,ddurst/zamboni,diox/olympia,anaran/olympia,Hitechverma/zamboni,kmaglione/olympia,harry-7/addons-server,Joergen/olympia,mrrrgn/olympia,ayushagrawal288/zamboni,muffinresearch/olympia,harry-7/addons-server,Hitechverma/zamboni,mudithkr/zamboni,clouserw/zamboni,jpetto/olympia,eviljeff/olympia,mdaif/olympia,kumar303/zamboni,koehlermichael/olympia,muffinresearch/olympia,wagnerand/zamboni,shahbaz17/zamboni,mozilla/zamboni,harry-7/addons-server,lavish205/olympia,Joergen/olympia,tsl143/addons-server,harikishen/addons-server,ddurst/zamboni,washort/zamboni,luckylavish/zamboni,andymckay/olympia,magopian/olympia,bqbn/addons-server,SuriyaaKudoIsc/olympia,psiinon/addons-server,ddurst/zamboni,wagnerand/zamboni,muffinresearch/olympia,atiqueahmedziad/addons-server,yfdyh000/olympia,eviljeff/olympia,Witia1/olympia,diox/zamboni,muffinresearch/olympia,ingenioustechie/zamboni,mozilla/olympia,kumar303/zamboni,ingenioustechie/zamboni,andymckay/addons-server,mstriemer/addons-server,tsl143/addons-server,Jobava/zamboni,beni55/olympia,wagnerand/olympia,diox/zamboni,atiqueahmedziad/addons-server,mudithkr/zamboni,Joergen/zamboni,luckylavish/zamboni,Prashant-Surya/addons-server,mstriemer/zamboni,washort/zamboni,muffinresearch/addons-server,ngokevin/zamboni,andymckay/olympia,Witia1/olympia,andymckay/zamboni,psiinon/addons-server,mozilla/addons-server,wagnerand/olympia,anaran/olympia,Witia1/olympia,washort/zamboni,mstriemer/addons-server,diox/zamboni,kumar303/addons-server,Jobava/zamboni,spasovski/zamboni,harikishen/addons-server,Revanth47/addons-server,aviarypl/mozilla-l10n-addons-server,robhudson/zamboni,tsl143/addons-server,muffinresearch/olympia,tsl143/zamboni,SuriyaaKudoIsc/olympia,Prashant-Surya/addons-server,ddurst/zamboni,Nolski/olympia,kmaglione/olympia,mozilla/addons-server,shahbaz17/zamboni,eviljeff/olympia,crdoconnor/olympia,beni55/olympia,johancz/olympia,mstriemer/zamboni,Joergen/olympia,jpetto/olympia,ayushagrawal288/zamboni,mozilla/olympia,Nolski/olympia,tsl143/zamboni,Nolski/olympia,johancz/olympia,harikishen/addons-server,Nolski/olympia,magopian/olympia,yfdyh000/olympia,kumar303/zamboni,eviljeff/zamboni,lavish205/olympia,Hitechverma/zamboni,anaran/olympia,lavish205/olympia,beni55/olympia,beni55/olympia,mstriemer/olympia,aviarypl/mozilla-l10n-addons-server,mozilla/olympia,ngokevin/zamboni,kmaglione/olympia,kumar303/addons-server,mdaif/olympia,elysium001/zamboni,wagnerand/olympia,jamesthechamp/zamboni,wagnerand/zamboni,ayushagrawal288/zamboni,jpetto/olympia,andymckay/addons-server,mozilla/addons-server,luckylav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