net/http: disable new flaky TestTransportCancelBeforeResponseHeaders test
net/http: disable new flaky TestTransportCancelBeforeResponseHeaders test

I'll rewrite this later. It's apparently dependent on scheduling order.
The earlier fix in git rev 9d56c181 seems fine, though.

Update #11894

Change-Id: I7c150918af4be079c262a5f2933ef4639cc535ef
Reviewed-on: https://go-review.googlesource.com/12731
Run-TryBot: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>

mwhudson/go,kakuhiroshi/go,vishsingh/go,binarycrusader/go,baiyunping333/go,ObjectiveJoe/go,cookerzhu/go,rentongzhang/go,rachtsingh/gogojuice,kevinc0825/go,famorted/go,jonasi/go,mwhudson/go,Jordanzuo/go,jasonxiong/go,christopher-henderson/Go,devpadawan/go,NichoZhang/go,goodlang/good,odeke-em/go,nakedgc/go,yasarkunduz/go,ObjectiveJoe/go,jacobxk/go,donnel6809/go,jonasi/go,mgyenik/go,cookerzhu/go,nakedgc/go,likesea/go,albertjin/golang-go,ganboing/go-esx,alash3al/go,malvira/go,goodlang/good,derekmarcotte/go,Samurais/go,stormltf/go,myPublicGit/go,greyhwndz/go,vishsingh/go,NunoEdgarGub1/go,theass/go,chinanjjohn2012/go,yangzhongj/go,ErikDubbelboer/go,golang/go,deft-code/go,cloudrain21/go,vishsingh/go,CodyGuo/go,lihuanghai/go,cainiaocome/go,lihuanghai/go,youprofit/go,vanloswang/go,springning/go,lihuanghai/go,dpatel06/go,mbrukman/go,binarycrusader/go,Pulgafree/go,CodyGuo/go,xiuzhifu/go,b54898533/go,codestation/go,GeorgiCodes/go,kakuhiroshi/go,nawawi/go,jacobxk/go,deft-code/go,yuhengye/go,vanloswang/go,monetate/go,xujianhai/go,jasonxiong/go,snowsnail/go,Stan-Lin-/go,cloudflare/go,yasarkunduz/go,theass/go,sinuos/go,josharian/go,ErikDubbelboer/go,jacobxk/go,akutz/go,ImJasonH/go,undergrowthlinear/go,ErikDubbelboer/go,4ad/go,sosop/go,xiaobodu/go,jacobhaven/go,jonahglover/go,golang/go,Stan-Lin-/go,jameskumar/go,AALEKH/go,miolini/go,parkdy/go,Pulgafree/go,malvira/go,binarycrusader/go,dterei/go,jacobhaven/go,miolini/go,danycoro/go,miolini/go,albertjin/golang-go,4ad/go,danycoro/go,Young55555/go,springning/go,ifagnosticism/go,zhangg/go,Endika/go,momchil-velikov/go,ichu501/go,xiaobodu/go,jmptrader/go,josharian/go,xujianhai/go,momchil-velikov/go,danycoro/go,youprofit/go,snowsnail/go,leeric92/go,likesea/go,shazow/go,JioCloud/go,skotti/go,Endika/go,zhangg/go,cloudrain21/go,theif519/go,Stan-Lin-/go,CiscoCloud/go,rachtsingh/gogojuice,beealone/go,famorted/go,shines77/go,rachtsingh/gogojuice,arschles/golang-go,vishsingh/go,zhangg/go,Jordanzuo/go,kevinc0825/go,willjunspecial/go,uileyar/go,sndnvaps/go,Badredapple/go,vsdutka/go,fjballest/golang,Stan-Lin-/go,linux-on-ibm-z/go,albertjin/golang-go,chinanjjohn2012/go,jmptrader/go,Endika/go,samanalysis/go,fjballest/golang,skatsuta/go,josharian/go,skotti/go,cloudrain21/go,Samurais/go,sosop/go,CAFxX/go,jacobxk/go,ganboing/go-esx,Cofyc/go,skatsuta/go,willjunspecial/go,kevinc0825/go,alex-zhang/go,ericsnowcurrently/go,Young55555/go,jacobsa/go,ImJasonH/go,g522342435/go,slavau/go,beealone/go,famorted/go,Badredapple/go,jonathanmarvens/go,myPublicGit/go,shazow/go,derekmarcotte/go,ganboing/go-esx,arschles/go-1,dterei/go,ichu501/go,ericsnowcurrently/go,vsekhar/elastic-go,WIZARD-CXY/go,theif519/go,alash3al/go,suncycheng/go,sndnvaps/go,dpatel06/go,monetate/go,XuYunnan/go,cloudflare/go,slavau/go,4ad/go,samanalysis/go,4ad/go,golang/go,cookerzhu/go,shines77/go,Pulgafree/go,uileyar/go,honsiorovskyi/go,monetate/go,NichoZhang/go,mgyenik/go,b54898533/go,ObjectiveJoe/go,alash3al/go,dterei/go,parkdy/go,goodlang/good,leeric92/go,vishsingh/go,derekmarcotte/go,goodlang/good,devpadawan/go,xinhuang327/go,sosop/go,constantine001/go,jonasi/go,CAFxX/go,xujianhai/go,polyverse-security/go,sinuos/go,sndnvaps/go,honsiorovskyi/go,CAFxX/go,XuYunnan/go,zcwfeng/go,joshsammut/go,dpatel06/go,JioCloud/go,andrewchambers/go,qskycolor/go,miolini/go,samanalysis/go,beealone/go,monetate/go,roth1002/go,Charlesdong/go-1,willjunspecial/go,XuYunnan/go,parkdy/go,xujianhai/go,nawawi/go,XuYunnan/go,miolini/go,jonahglover/go,ErikDubbelboer/go,xujianhai/go,Badredapple/go,b54898533/go,zouchao2010/go,ifagnosticism/go,mikekap/go,ifagnosticism/go,jasonxiong/go,cyberroadie/go,Young55555/go,alash3al/go,AALEKH/go,youprofit/go,jameskumar/go,cainiaocome/go,cyberroadie/go,akutz/go,mikekap/go,shines77/go,kim-racktop/go,deft-code/go,zhangg/go,polyverse-security/go,gohin/go,joshsammut/go,NunoEdgarGub1/go,parkdy/go,shines77/go,zcwfeng/go,xinhuang327/go,vanloswang/go,NunoEdgarGub1/go,devpadawan/go,devpadawan/go,josharian/go,roth1002/go,odeke-em/go,suncycheng/go,NunoEdgarGub1/go,mdp/go,shines77/go,kim-racktop/go,4ad/go,theif519/go,nawawi/go,Pulgafree/go,Pulgafree/go,jameskumar/go,youprofit/go,xinhuang327/go,donnel6809/go,miolini/go,skotti/go,xiaobodu/go,malvira/go,greyhwndz/go,willjunspecial/go,sinuos/go,springning/go,jonasi/go,theif519/go,NunoEdgarGub1/go,GeorgiCodes/go,deft-code/go,jacobxk/go,rachtsingh/gogojuice,beealone/go,Charlesdong/go-1,kim-racktop/go,danielsoro/go,wangfakang/go-1,ImJasonH/go,cyberroadie/go,greyhwndz/go,nakedgc/go,xiaobodu/go,cyberroadie/go,wangfakang/go-1,yasarkunduz/go,roth1002/go,g522342435/go,gdey/go,youprofit/go,zcwfeng/go,jacobhaven/go,Young55555/go,cloudflare/go,jacobhaven/go,slavau/go,zhangg/go,cyberroadie/go,zhangg/go,binarycrusader/go,xiaobodu/go,jdhenke/go,zcwfeng/go,monetate/go,slavau/go,yuhengye/go,vsdutka/go,binarycrusader/go,zhangg/go,malvira/go,NichoZhang/go,mbrukman/go,albertjin/golang-go,jdeng/go,CiscoCloud/go,ichu501/go,jdeng/go,dafyddcrosby/go,slavau/go,jefby/go,slavau/go,linux-on-ibm-z/go,gdey/go,g522342435/go,polyverse-security/go,Cofyc/go,slavau/go,xiaobodu/go,shazow/go,vsekhar/elastic-go,jonahglover/go,nakedgc/go,b54898533/go,nawawi/go,wangfakang/go-1,jacobhaven/go,undergrowthlinear/go,vsekhar/elastic-go,Young55555/go,AALEKH/go,honsiorovskyi/go,polyverse-security/go,JioCloud/go,Charlesdong/go-1,momchil-velikov/go,jdhenke/go,snowsnail/go,willjunspecial/go,nawawi/go,famorted/go,donnel6809/go,dafyddcrosby/go,sinuos/go,sndnvaps/go,CodyGuo/go,derekmarcotte/go,xiuzhifu/go,mwhudson/go,mdp/go,4ad/go,codestation/go,alex-zhang/go,xiaobodu/go,Stan-Lin-/go,stormltf/go,Badredapple/go,akutz/go,rachtsingh/gogojuice,vsekhar/elastic-go,fjballest/golang,roth1002/go,devpadawan/go,jacobxk/go,chinanjjohn2012/go,linux-on-ibm-z/go,jonasi/go,danielsoro/go,akutz/go,gdey/go,jdhenke/go,Endika/go,ObjectiveJoe/go,zcwfeng/go,theif519/go,GeorgiCodes/go,vishsingh/go,yangzhongj/go,AALEKH/go,uileyar/go,qskycolor/go,4ad/go,lihuanghai/go,youprofit/go,greyhwndz/go,zouchao2010/go,cainiaocome/go,CarterTsai/go,yangzhongj/go,samanalysis/go,mwhudson/go,yuhengye/go,XuYunnan/go,mbrukman/go,momchil-velikov/go,stormltf/go,uileyar/go,gohin/go,rentongzhang/go,vsdutka/go,samanalysis/go,polyverse-security/go,g522342435/go,devpadawan/go,yasarkunduz/go,CiscoCloud/go,slavau/go,NichoZhang/go,mwhudson/go,golang/go,snowsnail/go,roth1002/go,mdp/go,kakuhiroshi/go,springning/go,yasarkunduz/go,joshsammut/go,danielsoro/go,springning/go,jefby/go,alex-zhang/go,stormltf/go,ganboing/go-esx,constantine001/go,fjballest/golang,myPublicGit/go,Endika/go,jdeng/go,ImJasonH/go,sndnvaps/go,andrewchambers/go,mdp/go,undergrowthlinear/go,WIZARD-CXY/go,greyhwndz/go,rentongzhang/go,vishsingh/go,qskycolor/go,alash3al/go,ObjectiveJoe/go,momchil-velikov/go,rentongzhang/go,gohin/go,ericsnowcurrently/go,yuhengye/go,suncycheng/go,cyberroadie/go,codestation/go,Samurais/go,malvira/go,Samurais/go,cainiaocome/go,zcwfeng/go,danielsoro/go,zouchao2010/go,dpatel06/go,rentongzhang/go,lihuanghai/go,ErikDubbelboer/go,greyhwndz/go,b54898533/go,snowsnail/go,NunoEdgarGub1/go,ganboing/go-esx,uileyar/go,alex-zhang/go,odeke-em/go,mgyenik/go,monetate/go,andrewchambers/go,sinuos/go,dafyddcrosby/go,myPublicGit/go,jacobhaven/go,dpatel06/go,suncycheng/go,mikekap/go,chinanjjohn2012/go,yuhengye/go,gdey/go,skatsuta/go,vishsingh/go,vanloswang/go,NichoZhang/go,famorted/go,odeke-em/go,shazow/go,myPublicGit/go,ErikDubbelboer/go,theif519/go,golang/go,vanloswang/go,cainiaocome/go,cyberroadie/go,jasonxiong/go,snowsnail/go,b54898533/go,shines77/go,ImJasonH/go,undergrowthlinear/go,theass/go,gohin/go,arschles/go-1,gdey/go,dafyddcrosby/go,likesea/go,sosop/go,JioCloud/go,constantine001/go,wangfakang/go-1,Cofyc/go,alash3al/go,theass/go,willjunspecial/go,donnel6809/go,CiscoCloud/go,josharian/go,miolini/go,cookerzhu/go,arschles/go-1,g522342435/go,xinhuang327/go,odeke-em/go,jacobhaven/go,g522342435/go,sinuos/go,CarterTsai/go,kevinc0825/go,theass/go,theass/go,parkdy/go,jdeng/go,andrewchambers/go,wangfakang/go-1,ifagnosticism/go,jefby/go,xujianhai/go,uileyar/go,shazow/go,ifagnosticism/go,deft-code/go,nawawi/go,xiuzhifu/go,jdeng/go,CiscoCloud/go,skatsuta/go,binarycrusader/go,donnel6809/go,honsiorovskyi/go,jonasi/go,zouchao2010/go,zouchao2010/go,vsekhar/elastic-go,suncycheng/go,Cofyc/go,leeric92/go,WIZARD-CXY/go,mdp/go,willjunspecial/go,mbrukman/go,jacobxk/go,youprofit/go,cloudflare/go,jefby/go,Samurais/go,leeric92/go,sndnvaps/go,nawawi/go,donnel6809/go,alex-zhang/go,cloudflare/go,danycoro/go,Cofyc/go,likesea/go,alex-zhang/go,josharian/go,baiyunping333/go,miolini/go,mgyenik/go,theif519/go,skotti/go,gdey/go,NichoZhang/go,gohin/go,nawawi/go,Charlesdong/go-1,undergrowthlinear/go,goodlang/good,danycoro/go,qskycolor/go,ericsnowcurrently/go,jonathanmarvens/go,arschles/golang-go,chinanjjohn2012/go,arschles/go-1,mikekap/go,xujianhai/go,yasarkunduz/go,ganboing/go-esx,mdp/go,JioCloud/go,jonathanmarvens/go,uileyar/go,dpatel06/go,monetate/go,andrewchambers/go,cainiaocome/go,jdeng/go,kim-racktop/go,ericsnowcurrently/go,jonahglover/go,baiyunping333/go,likesea/go,jmptrader/go,joshsammut/go,likesea/go,likesea/go,monetate/go,xiuzhifu/go,honsiorovskyi/go,kakuhiroshi/go,kevinc0825/go,constantine001/go,CodyGuo/go,malvira/go,ichu501/go,NichoZhang/go,mwhudson/go,samanalysis/go,snowsnail/go,binarycrusader/go,xinhuang327/go,Pulgafree/go,chinanjjohn2012/go,CiscoCloud/go,famorted/go,Badredapple/go,stormltf/go,rentongzhang/go,Jordanzuo/go,skatsuta/go,rentongzhang/go,Charlesdong/go-1,shazow/go,danycoro/go,vsdutka/go,samanalysis/go,likesea/go,Jordanzuo/go,andrewchambers/go,jonahglover/go,beealone/go,linux-on-ibm-z/go,Badredapple/go,vsdutka/go,gdey/go,cloudflare/go,roth1002/go,danycoro/go,skotti/go,ifagnosticism/go,malvira/go,ErikDubbelboer/go,codestation/go,AALEKH/go,xiuzhifu/go,arschles/golang-go,nakedgc/go,beealone/go,parkdy/go,honsiorovskyi/go,arschles/golang-go,malvira/go,stormltf/go,rachtsingh/gogojuice,goodlang/good,Cofyc/go,Jordanzuo/go,stormltf/go,WIZARD-CXY/go,dafyddcrosby/go,XuYunnan/go,ganboing/go-esx,uileyar/go,golang/go,sinuos/go,xujianhai/go,danielsoro/go,cyberroadie/go,dterei/go,ichu501/go,vanloswang/go,sosop/go,NunoEdgarGub1/go,jameskumar/go,samanalysis/go,Charlesdong/go-1,goodlang/good,CarterTsai/go,alex-zhang/go,yangzhongj/go,leeric92/go,Jordanzuo/go,lihuanghai/go,famorted/go,xiuzhifu/go,mikekap/go,kakuhiroshi/go,nakedgc/go,wangfakang/go-1,skotti/go,zcwfeng/go,jacobsa/go,CodyGuo/go,springning/go,momchil-velikov/go,akutz/go,Samurais/go,xinhuang327/go,jonathanmarvens/go,momchil-velikov/go,jonathanmarvens/go,kim-racktop/go,4ad/go,mgyenik/go,fjballest/golang,lihuanghai/go,danielsoro/go,mdp/go,yuhengye/go,arschles/golang-go,kim-racktop/go,baiyunping333/go,cookerzhu/go,kim-racktop/go,ErikDubbelboer/go,cloudflare/go,donnel6809/go,linux-on-ibm-z/go,vanloswang/go,vsekhar/elastic-go,ifagnosticism/go,kevinc0825/go,jonahglover/go,jefby/go,gohin/go,Stan-Lin-/go,Samurais/go,skatsuta/go,jameskumar/go,WIZARD-CXY/go,derekmarcotte/go,mwhudson/go,ericsnowcurrently/go,jdhenke/go,qskycolor/go,mgyenik/go,WIZARD-CXY/go,deft-code/go,Stan-Lin-/go,andrewchambers/go,Charlesdong/go-1,g522342435/go,cainiaocome/go,ImJasonH/go,Young55555/go,yuhengye/go,jonahglover/go,skatsuta/go,jacobxk/go,yangzhongj/go,CarterTsai/go,arschles/go-1,jasonxiong/go,jdeng/go,arschles/go-1,donnel6809/go,honsiorovskyi/go,jacobsa/go,suncycheng/go,codestation/go,josharian/go,ImJasonH/go,kakuhiroshi/go,andrewchambers/go,vsekhar/elastic-go,Samurais/go,jdhenke/go,arschles/golang-go,baiyunping333/go,arschles/golang-go,alash3al/go,cookerzhu/go,joshsammut/go,honsiorovskyi/go,jameskumar/go,cloudrain21/go,leeric92/go,derekmarcotte/go,youprofit/go,cookerzhu/go,ichu501/go,lihuanghai/go,NichoZhang/go,golang/go,dterei/go,kakuhiroshi/go,devpadawan/go,GeorgiCodes/go,suncycheng/go,kevinc0825/go,sndnvaps/go,CAFxX/go,CAFxX/go,nakedgc/go,qskycolor/go,codestation/go,jefby/go,goodlang/good,parkdy/go,mbrukman/go,jmptrader/go,g522342435/go,joshsammut/go,baiyunping333/go,jdhenke/go,Jordanzuo/go,jasonxiong/go,skotti/go,CiscoCloud/go,mwhudson/go,jdhenke/go,GeorgiCodes/go,mbrukman/go,skotti/go,constantine001/go,polyverse-security/go,mbrukman/go,jacobsa/go,ericsnowcurrently/go,zouchao2010/go,vsdutka/go,jacobsa/go,dterei/go,odeke-em/go,jonasi/go,theass/go,baiyunping333/go,Cofyc/go,Badredapple/go,polyverse-security/go,wangfakang/go-1,GeorgiCodes/go,greyhwndz/go,jacobsa/go,jameskumar/go,zouchao2010/go,cloudflare/go,snowsnail/go,mgyenik/go,derekmarcotte/go,gohin/go,yasarkunduz/go,fjballest/golang,akutz/go,rachtsingh/gogojuice,cookerzhu/go,ericsnowcurrently/go,CAFxX/go,devpadawan/go,roth1002/go,vsekhar/elastic-go,sosop/go,dafyddcrosby/go,WIZARD-CXY/go,shines77/go,jonasi/go,ichu501/go,sosop/go,golang/go,mikekap/go,zcwfeng/go,Endika/go,sosop/go,cloudrain21/go,derekmarcotte/go,constantine001/go,CodyGuo/go,jacobhaven/go,jmptrader/go,myPublicGit/go,cloudrain21/go,jmptrader/go,codestation/go,b54898533/go,ObjectiveJoe/go,qskycolor/go,suncycheng/go,shazow/go,springning/go,beealone/go,theif519/go,XuYunnan/go,ImJasonH/go,leeric92/go,vsdutka/go,Jordanzuo/go,JioCloud/go,rachtsingh/gogojuice,roth1002/go,joshsammut/go,linux-on-ibm-z/go,jasonxiong/go,AALEKH/go,deft-code/go,dafyddcrosby/go,CarterTsai/go,shines77/go,CiscoCloud/go,CarterTsai/go,Endika/go,xinhuang327/go,rentongzhang/go,linux-on-ibm-z/go,CarterTsai/go,chinanjjohn2012/go,Charlesdong/go-1,kim-racktop/go,GeorgiCodes/go,Young55555/go,ObjectiveJoe/go,NunoEdgarGub1/go,binarycrusader/go,albertjin/golang-go,ganboing/go-esx,wangfakang/go-1,mikekap/go,sndnvaps/go,JioCloud/go,joshsammut/go,jonathanmarvens/go,deft-code/go,GeorgiCodes/go,gdey/go,XuYunnan/go,cloudrain21/go,jmptrader/go,CAFxX/go,vanloswang/go,Endika/go,theass/go,WIZARD-CXY/go,linux-on-ibm-z/go,qskycolor/go,jameskumar/go,albertjin/golang-go,ichu501/go,danycoro/go,dterei/go,springning/go,AALEKH/go,dafyddcrosby/go,gohin/go,kakuhiroshi/go,akutz/go,Pulgafree/go,chinanjjohn2012/go,AALEKH/go,fjballest/golang,constantine001/go,jefby/go,akutz/go,sinuos/go,xiuzhifu/go,zouchao2010/go,alash3al/go,Young55555/go,arschles/go-1,mikekap/go,yasarkunduz/go,odeke-em/go,jacobsa/go,albertjin/golang-go,codestation/go,JioCloud/go,jefby/go,jdhenke/go,myPublicGit/go,undergrowthlinear/go,josharian/go,undergrowthlinear/go,dterei/go,constantine001/go,yangzhongj/go,jasonxiong/go,jonathanmarvens/go,cloudrain21/go,xiuzhifu/go,kevinc0825/go,CAFxX/go,willjunspecial/go,mbrukman/go,ObjectiveJoe/go,cainiaocome/go,vsdutka/go,alex-zhang/go,undergrowthlinear/go,Stan-Lin-/go,zhangg/go,jmptrader/go,leeric92/go,danielsoro/go,ifagnosticism/go,famorted/go,xiaobodu/go,CodyGuo/go,Badredapple/go,nakedgc/go,jonathanmarvens/go,polyverse-security/go,mdp/go,parkdy/go,shazow/go,mgyenik/go,baiyunping333/go,Pulgafree/go,yangzhongj/go,dpatel06/go,myPublicGit/go,albertjin/golang-go,skatsuta/go,dpatel06/go,beealone/go,greyhwndz/go,odeke-em/go,momchil-velikov/go,fjballest/golang,jdeng/go,jonahglover/go,arschles/golang-go,CodyGuo/go,danielsoro/go,Cofyc/go,xinhuang327/go,jacobsa/go,CarterTsai/go,yangzhongj/go,yuhengye/go,b54898533/go,stormltf/go,arschles/go-1