Give Python tests 15 minutes
Give Python tests 15 minutes

Also refactors configurations to setting timeout multipliers and
allowing individual test languages to set their desired absolute
timeouts.

wcevans/grpc,carl-mastrangelo/grpc,msiedlarek/grpc,quizlet/grpc,Crevil/grpc,donnadionne/grpc,carl-mastrangelo/grpc,carl-mastrangelo/grpc,donnadionne/grpc,mehrdada/grpc,a11r/grpc,deepaklukose/grpc,kpayson64/grpc,pmarks-net/grpc,ipylypiv/grpc,a-veitch/grpc,ananthonline/grpc,pmarks-net/grpc,VcamX/grpc,ppietrasa/grpc,stanley-cheung/grpc,Vizerai/grpc,andrewpollock/grpc,apolcyn/grpc,grani/grpc,mehrdada/grpc,pmarks-net/grpc,PeterFaiman/ruby-grpc-minimal,ctiller/grpc,miselin/grpc,pszemus/grpc,deepaklukose/grpc,VcamX/grpc,andrewpollock/grpc,bogdandrutu/grpc,malexzx/grpc,msmania/grpc,ejona86/grpc,andrewpollock/grpc,leifurhauks/grpc,firebase/grpc,tamihiro/grpc,rjshade/grpc,bogdandrutu/grpc,madongfly/grpc,ncteisen/grpc,soltanmm/grpc,arkmaxim/grpc,Crevil/grpc,chrisdunelm/grpc,soltanmm/grpc,mehrdada/grpc,msmania/grpc,yugui/grpc,royalharsh/grpc,donnadionne/grpc,msmania/grpc,MakMukhi/grpc,bogdandrutu/grpc,bogdandrutu/grpc,Vizerai/grpc,dgquintas/grpc,ctiller/grpc,baylabs/grpc,carl-mastrangelo/grpc,makdharma/grpc,jtattermusch/grpc,dklempner/grpc,goldenbull/grpc,jboeuf/grpc,y-zeng/grpc,malexzx/grpc,7anner/grpc,malexzx/grpc,VcamX/grpc,dgquintas/grpc,yang-g/grpc,ejona86/grpc,y-zeng/grpc,kriswuollett/grpc,zhimingxie/grpc,grani/grpc,makdharma/grpc,vjpai/grpc,royalharsh/grpc,perumaalgoog/grpc,tengyifei/grpc,wcevans/grpc,sreecha/grpc,dklempner/grpc,a11r/grpc,grpc/grpc,ctiller/grpc,chrisdunelm/grpc,a11r/grpc,MakMukhi/grpc,chrisdunelm/grpc,thunderboltsid/grpc,kskalski/grpc,yugui/grpc,murgatroid99/grpc,msmania/grpc,soltanmm/grpc,msmania/grpc,fuchsia-mirror/third_party-grpc,y-zeng/grpc,maxwell-demon/grpc,simonkuang/grpc,kumaralokgithub/grpc,baylabs/grpc,muxi/grpc,yongni/grpc,grpc/grpc,greasypizza/grpc,yang-g/grpc,quizlet/grpc,makdharma/grpc,sreecha/grpc,kpayson64/grpc,jcanizales/grpc,pszemus/grpc,simonkuang/grpc,MakMukhi/grpc,jboeuf/grpc,w4-sjcho/grpc,ananthonline/grpc,rjshade/grpc,makdharma/grpc,ananthonline/grpc,LuminateWireless/grpc,daniel-j-born/grpc,matt-kwong/grpc,malexzx/grpc,thinkerou/grpc,perumaalgoog/grpc,apolcyn/grpc,jtattermusch/grpc,muxi/grpc,w4-sjcho/grpc,malexzx/grpc,nicolasnoble/grpc,murgatroid99/grpc,hstefan/grpc,tamihiro/grpc,murgatroid99/grpc,philcleveland/grpc,jtattermusch/grpc,ctiller/grpc,leifurhauks/grpc,pmarks-net/grpc,7anner/grpc,thinkerou/grpc,greasypizza/grpc,soltanmm/grpc,chrisdunelm/grpc,pszemus/grpc,apolcyn/grpc,Vizerai/grpc,tengyifei/grpc,vjpai/grpc,thinkerou/grpc,madongfly/grpc,grpc/grpc,leifurhauks/grpc,donnadionne/grpc,PeterFaiman/ruby-grpc-minimal,a11r/grpc,sreecha/grpc,fuchsia-mirror/third_party-grpc,arkmaxim/grpc,dklempner/grpc,andrewpollock/grpc,jboeuf/grpc,fuchsia-mirror/third_party-grpc,maxwell-demon/grpc,stanley-cheung/grpc,vjpai/grpc,pmarks-net/grpc,infinit/grpc,muxi/grpc,wcevans/grpc,donnadionne/grpc,7anner/grpc,makdharma/grpc,hstefan/grpc,fuchsia-mirror/third_party-grpc,kpayson64/grpc,msiedlarek/grpc,soltanmm/grpc,a-veitch/grpc,chrisdunelm/grpc,ejona86/grpc,arkmaxim/grpc,tengyifei/grpc,muxi/grpc,malexzx/grpc,simonkuang/grpc,murgatroid99/grpc,Crevil/grpc,deepaklukose/grpc,andrewpollock/grpc,ejona86/grpc,simonkuang/grpc,quizlet/grpc,matt-kwong/grpc,msiedlarek/grpc,a11r/grpc,7anner/grpc,vjpai/grpc,greasypizza/grpc,ppietrasa/grpc,miselin/grpc,chrisdunelm/grpc,PeterFaiman/ruby-grpc-minimal,msiedlarek/grpc,pmarks-net/grpc,firebase/grpc,kskalski/grpc,w4-sjcho/grpc,baylabs/grpc,ncteisen/grpc,grpc/grpc,goldenbull/grpc,7anner/grpc,murgatroid99/grpc,daniel-j-born/grpc,thunderboltsid/grpc,kriswuollett/grpc,daniel-j-born/grpc,infinit/grpc,tengyifei/grpc,sreecha/grpc,vsco/grpc,pszemus/grpc,leifurhauks/grpc,ejona86/grpc,kpayson64/grpc,daniel-j-born/grpc,msmania/grpc,grpc/grpc,goldenbull/grpc,dgquintas/grpc,infinit/grpc,VcamX/grpc,thunderboltsid/grpc,podsvirov/grpc,royalharsh/grpc,murgatroid99/grpc,thinkerou/grpc,nicolasnoble/grpc,matt-kwong/grpc,hstefan/grpc,ipylypiv/grpc,adelez/grpc,tamihiro/grpc,y-zeng/grpc,makdharma/grpc,apolcyn/grpc,miselin/grpc,goldenbull/grpc,dgquintas/grpc,matt-kwong/grpc,firebase/grpc,baylabs/grpc,msiedlarek/grpc,dklempner/grpc,grpc/grpc,tengyifei/grpc,donnadionne/grpc,ncteisen/grpc,jcanizales/grpc,goldenbull/grpc,firebase/grpc,philcleveland/grpc,arkmaxim/grpc,jboeuf/grpc,deepaklukose/grpc,yongni/grpc,ejona86/grpc,donnadionne/grpc,jtattermusch/grpc,zhimingxie/grpc,tengyifei/grpc,infinit/grpc,chrisdunelm/grpc,infinit/grpc,carl-mastrangelo/grpc,ctiller/grpc,ctiller/grpc,nicolasnoble/grpc,soltanmm-google/grpc,grani/grpc,yongni/grpc,jcanizales/grpc,msmania/grpc,royalharsh/grpc,nicolasnoble/grpc,MakMukhi/grpc,jtattermusch/grpc,adelez/grpc,dklempner/grpc,ncteisen/grpc,daniel-j-born/grpc,yongni/grpc,jboeuf/grpc,kskalski/grpc,soltanmm-google/grpc,tamihiro/grpc,nicolasnoble/grpc,greasypizza/grpc,vjpai/grpc,grpc/grpc,dgquintas/grpc,carl-mastrangelo/grpc,firebase/grpc,mehrdada/grpc,dgquintas/grpc,ipylypiv/grpc,soltanmm-google/grpc,zhimingxie/grpc,VcamX/grpc,ananthonline/grpc,deepaklukose/grpc,kskalski/grpc,geffzhang/grpc,muxi/grpc,PeterFaiman/ruby-grpc-minimal,yongni/grpc,geffzhang/grpc,ppietrasa/grpc,ncteisen/grpc,mehrdada/grpc,LuminateWireless/grpc,maxwell-demon/grpc,royalharsh/grpc,firebase/grpc,apolcyn/grpc,jtattermusch/grpc,msiedlarek/grpc,Crevil/grpc,grani/grpc,vjpai/grpc,wcevans/grpc,thinkerou/grpc,a-veitch/grpc,grpc/grpc,jcanizales/grpc,donnadionne/grpc,simonkuang/grpc,geffzhang/grpc,grani/grpc,kpayson64/grpc,zhimingxie/grpc,ctiller/grpc,grpc/grpc,maxwell-demon/grpc,tamihiro/grpc,soltanmm-google/grpc,kriswuollett/grpc,LuminateWireless/grpc,muxi/grpc,Crevil/grpc,dklempner/grpc,madongfly/grpc,fuchsia-mirror/third_party-grpc,msmania/grpc,yang-g/grpc,dgquintas/grpc,PeterFaiman/ruby-grpc-minimal,thinkerou/grpc,ctiller/grpc,perumaalgoog/grpc,vsco/grpc,muxi/grpc,ejona86/grpc,nicolasnoble/grpc,tamihiro/grpc,podsvirov/grpc,mehrdada/grpc,muxi/grpc,daniel-j-born/grpc,matt-kwong/grpc,matt-kwong/grpc,tamihiro/grpc,ppietrasa/grpc,sreecha/grpc,kpayson64/grpc,arkmaxim/grpc,thunderboltsid/grpc,donnadionne/grpc,tamihiro/grpc,yugui/grpc,dklempner/grpc,ananthonline/grpc,deepaklukose/grpc,pszemus/grpc,ipylypiv/grpc,arkmaxim/grpc,quizlet/grpc,vjpai/grpc,jboeuf/grpc,a-veitch/grpc,kpayson64/grpc,wcevans/grpc,Crevil/grpc,jboeuf/grpc,rjshade/grpc,Vizerai/grpc,adelez/grpc,stanley-cheung/grpc,thunderboltsid/grpc,a11r/grpc,kskalski/grpc,hstefan/grpc,adelez/grpc,a11r/grpc,kumaralokgithub/grpc,apolcyn/grpc,firebase/grpc,geffzhang/grpc,firebase/grpc,maxwell-demon/grpc,nicolasnoble/grpc,stanley-cheung/grpc,kumaralokgithub/grpc,kriswuollett/grpc,jboeuf/grpc,wcevans/grpc,stanley-cheung/grpc,miselin/grpc,kriswuollett/grpc,vsco/grpc,soltanmm-google/grpc,adelez/grpc,mehrdada/grpc,yugui/grpc,LuminateWireless/grpc,perumaalgoog/grpc,tengyifei/grpc,kriswuollett/grpc,deepaklukose/grpc,kskalski/grpc,maxwell-demon/grpc,yang-g/grpc,grani/grpc,nicolasnoble/grpc,adelez/grpc,ipylypiv/grpc,philcleveland/grpc,a-veitch/grpc,yang-g/grpc,podsvirov/grpc,tengyifei/grpc,grpc/grpc,PeterFaiman/ruby-grpc-minimal,jboeuf/grpc,PeterFaiman/ruby-grpc-minimal,wcevans/grpc,baylabs/grpc,soltanmm/grpc,LuminateWireless/grpc,y-zeng/grpc,mehrdada/grpc,miselin/grpc,carl-mastrangelo/grpc,perumaalgoog/grpc,deepaklukose/grpc,philcleveland/grpc,baylabs/grpc,vsco/grpc,matt-kwong/grpc,murgatroid99/grpc,PeterFaiman/ruby-grpc-minimal,pszemus/grpc,apolcyn/grpc,y-zeng/grpc,infinit/grpc,vsco/grpc,a11r/grpc,perumaalgoog/grpc,a-veitch/grpc,quizlet/grpc,bogdandrutu/grpc,msiedlarek/grpc,jcanizales/grpc,jtattermusch/grpc,matt-kwong/grpc,baylabs/grpc,rjshade/grpc,perumaalgoog/grpc,kpayson64/grpc,jtattermusch/grpc,simonkuang/grpc,a-veitch/grpc,fuchsia-mirror/third_party-grpc,yongni/grpc,rjshade/grpc,hstefan/grpc,ncteisen/grpc,thinkerou/grpc,y-zeng/grpc,thinkerou/grpc,apolcyn/grpc,podsvirov/grpc,donnadionne/grpc,miselin/grpc,Crevil/grpc,rjshade/grpc,geffzhang/grpc,yang-g/grpc,sreecha/grpc,jtattermusch/grpc,vjpai/grpc,w4-sjcho/grpc,daniel-j-born/grpc,murgatroid99/grpc,yugui/grpc,yugui/grpc,bogdandrutu/grpc,carl-mastrangelo/grpc,LuminateWireless/grpc,kpayson64/grpc,Vizerai/grpc,LuminateWireless/grpc,kumaralokgithub/grpc,vsco/grpc,zhimingxie/grpc,greasypizza/grpc,maxwell-demon/grpc,arkmaxim/grpc,ctiller/grpc,pszemus/grpc,fuchsia-mirror/third_party-grpc,firebase/grpc,stanley-cheung/grpc,grpc/grpc,vjpai/grpc,rjshade/grpc,thunderboltsid/grpc,LuminateWireless/grpc,vsco/grpc,bogdandrutu/grpc,7anner/grpc,w4-sjcho/grpc,VcamX/grpc,ejona86/grpc,andrewpollock/grpc,yongni/grpc,quizlet/grpc,ejona86/grpc,MakMukhi/grpc,murgatroid99/grpc,soltanmm-google/grpc,philcleveland/grpc,madongfly/grpc,thinkerou/grpc,leifurhauks/grpc,grani/grpc,ctiller/grpc,Vizerai/grpc,philcleveland/grpc,firebase/grpc,msmania/grpc,goldenbull/grpc,hstefan/grpc,dklempner/grpc,quizlet/grpc,sreecha/grpc,zhimingxie/grpc,zhimingxie/grpc,thunderboltsid/grpc,nicolasnoble/grpc,VcamX/grpc,goldenbull/grpc,ncteisen/grpc,matt-kwong/grpc,grani/grpc,mehrdada/grpc,deepaklukose/grpc,soltanmm-google/grpc,yang-g/grpc,msiedlarek/grpc,madongfly/grpc,carl-mastrangelo/grpc,bogdandrutu/grpc,jtattermusch/grpc,yugui/grpc,dgquintas/grpc,muxi/grpc,msiedlarek/grpc,jboeuf/grpc,nicolasnoble/grpc,andrewpollock/grpc,miselin/grpc,thunderboltsid/grpc,andrewpollock/grpc,yang-g/grpc,ppietrasa/grpc,kumaralokgithub/grpc,stanley-cheung/grpc,stanley-cheung/grpc,yugui/grpc,mehrdada/grpc,jboeuf/grpc,miselin/grpc,quizlet/grpc,leifurhauks/grpc,ananthonline/grpc,7anner/grpc,royalharsh/grpc,sreecha/grpc,bogdandrutu/grpc,kumaralokgithub/grpc,madongfly/grpc,royalharsh/grpc,adelez/grpc,sreecha/grpc,thinkerou/grpc,zhimingxie/grpc,carl-mastrangelo/grpc,ncteisen/grpc,ananthonline/grpc,ppietrasa/grpc,greasypizza/grpc,infinit/grpc,podsvirov/grpc,pmarks-net/grpc,chrisdunelm/grpc,vjpai/grpc,carl-mastrangelo/grpc,mehrdada/grpc,Vizerai/grpc,malexzx/grpc,kriswuollett/grpc,Vizerai/grpc,goldenbull/grpc,stanley-cheung/grpc,ppietrasa/grpc,pszemus/grpc,simonkuang/grpc,royalharsh/grpc,greasypizza/grpc,nicolasnoble/grpc,kriswuollett/grpc,sreecha/grpc,PeterFaiman/ruby-grpc-minimal,ncteisen/grpc,yongni/grpc,kskalski/grpc,sreecha/grpc,jboeuf/grpc,perumaalgoog/grpc,madongfly/grpc,madongfly/grpc,a-veitch/grpc,muxi/grpc,VcamX/grpc,kskalski/grpc,jcanizales/grpc,VcamX/grpc,kumaralokgithub/grpc,w4-sjcho/grpc,wcevans/grpc,a11r/grpc,kumaralokgithub/grpc,soltanmm-google/grpc,thinkerou/grpc,ejona86/grpc,firebase/grpc,simonkuang/grpc,carl-mastrangelo/grpc,ananthonline/grpc,w4-sjcho/grpc,malexzx/grpc,rjshade/grpc,dklempner/grpc,Vizerai/grpc,pmarks-net/grpc,podsvirov/grpc,jcanizales/grpc,madongfly/grpc,Crevil/grpc,pszemus/grpc,ctiller/grpc,greasypizza/grpc,a-veitch/grpc,infinit/grpc,Crevil/grpc,y-zeng/grpc,kpayson64/grpc,w4-sjcho/grpc,pszemus/grpc,y-zeng/grpc,ejona86/grpc,andrewpollock/grpc,ncteisen/grpc,vsco/grpc,kskalski/grpc,ananthonline/grpc,stanley-cheung/grpc,thunderboltsid/grpc,MakMukhi/grpc,pmarks-net/grpc,wcevans/grpc,perumaalgoog/grpc,kumaralokgithub/grpc,philcleveland/grpc,ppietrasa/grpc,soltanmm/grpc,muxi/grpc,chrisdunelm/grpc,maxwell-demon/grpc,dgquintas/grpc,ctiller/grpc,chrisdunelm/grpc,malexzx/grpc,ncteisen/grpc,vjpai/grpc,greasypizza/grpc,MakMukhi/grpc,podsvirov/grpc,mehrdada/grpc,makdharma/grpc,jtattermusch/grpc,maxwell-demon/grpc,vsco/grpc,philcleveland/grpc,soltanmm/grpc,adelez/grpc,jcanizales/grpc,Vizerai/grpc,ipylypiv/grpc,grpc/grpc,donnadionne/grpc,adelez/grpc,stanley-cheung/grpc,sreecha/grpc,ipylypiv/grpc,simonkuang/grpc,chrisdunelm/grpc,kpayson64/grpc,arkmaxim/grpc,MakMukhi/grpc,ejona86/grpc,yugui/grpc,zhimingxie/grpc,philcleveland/grpc,nicolasnoble/grpc,daniel-j-born/grpc,stanley-cheung/grpc,apolcyn/grpc,pszemus/grpc,dgquintas/grpc,grani/grpc,fuchsia-mirror/third_party-grpc,baylabs/grpc,MakMukhi/grpc,murgatroid99/grpc,makdharma/grpc,jtattermusch/grpc,goldenbull/grpc,quizlet/grpc,ipylypiv/grpc,leifurhauks/grpc,donnadionne/grpc,hstefan/grpc,kriswuollett/grpc,thinkerou/grpc,leifurhauks/grpc,arkmaxim/grpc,soltanmm-google/grpc,podsvirov/grpc,7anner/grpc,w4-sjcho/grpc,7anner/grpc,soltanmm/grpc,ppietrasa/grpc,pszemus/grpc,tamihiro/grpc,LuminateWireless/grpc,miselin/grpc,hstefan/grpc,geffzhang/grpc,fuchsia-mirror/third_party-grpc,fuchsia-mirror/third_party-grpc,ipylypiv/grpc,dgquintas/grpc,tengyifei/grpc,firebase/grpc,baylabs/grpc,geffzhang/grpc,yongni/grpc,muxi/grpc,geffzhang/grpc,makdharma/grpc,leifurhauks/grpc,PeterFaiman/ruby-grpc-minimal,daniel-j-born/grpc,yang-g/grpc,vjpai/grpc,ncteisen/grpc,Vizerai/grpc,podsvirov/grpc,geffzhang/grpc,infinit/grpc,hstefan/grpc,rjshade/grpc,royalharsh/grpc,jcanizales/grpc