Fix test for multiple reads
Fix test for multiple reads

Previously this test assumed all bytes would be read in one request.

Also update test to use grpc_init() so that we can enable tracing.

w4-sjcho/grpc,andrewpollock/grpc,firebase/grpc,thinkerou/grpc,malexzx/grpc,yugui/grpc,tempbottle/grpc,tengyifei/grpc,vjpai/grpc,VcamX/grpc,ncteisen/grpc,vsco/grpc,w4-sjcho/grpc,infinit/grpc,mehrdada/grpc,grani/grpc,ncteisen/grpc,carl-mastrangelo/grpc,kskalski/grpc,jcanizales/grpc,thinkerou/grpc,carl-mastrangelo/grpc,miselin/grpc,surround-io/grpc,kumaralokgithub/grpc,infinit/grpc,baylabs/grpc,dgquintas/grpc,yongni/grpc,msiedlarek/grpc,ppietrasa/grpc,grani/grpc,carl-mastrangelo/grpc,ksophocleous/grpc,fuchsia-mirror/third_party-grpc,yugui/grpc,greasypizza/grpc,VcamX/grpc,msmania/grpc,wkubiak/grpc,xtopsoft/grpc,ipylypiv/grpc,vjpai/grpc,tengyifei/grpc,7anner/grpc,arkmaxim/grpc,madongfly/grpc,soltanmm-google/grpc,miselin/grpc,fichter/grpc,muxi/grpc,crast/grpc,wangyikai/grpc,MakMukhi/grpc,daniel-j-born/grpc,doubi-workshop/grpc,fuchsia-mirror/third_party-grpc,grani/grpc,dklempner/grpc,VcamX/grpc,ejona86/grpc,yonglehou/grpc,fuchsia-mirror/third_party-grpc,ncteisen/grpc,matt-kwong/grpc,deepaklukose/grpc,w4-sjcho/grpc,kpayson64/grpc,thinkerou/grpc,murgatroid99/grpc,perumaalgoog/grpc,perumaalgoog/grpc,jcanizales/grpc,podsvirov/grpc,Crevil/grpc,goldenbull/grpc,fuchsia-mirror/third_party-grpc,zeliard/grpc,LuminateWireless/grpc,VcamX/grpc,yonglehou/grpc,yonglehou/grpc,xtopsoft/grpc,firebase/grpc,pmarks-net/grpc,ipylypiv/grpc,cgvarela/grpc,Vizerai/grpc,ejona86/grpc,thunderboltsid/grpc,donnadionne/grpc,madongfly/grpc,greasypizza/grpc,stanley-cheung/grpc,ctiller/grpc,baylabs/grpc,adelez/grpc,7anner/grpc,ipylypiv/grpc,chrisdunelm/grpc,ppietrasa/grpc,stanley-cheung/grpc,daniel-j-born/grpc,grani/grpc,bogdandrutu/grpc,matt-kwong/grpc,yongni/grpc,infinit/grpc,dklempner/grpc,thunderboltsid/grpc,w4-sjcho/grpc,jtattermusch/grpc,matt-kwong/grpc,ofrobots/grpc,mway08/grpc,firebase/grpc,tamihiro/grpc,apolcyn/grpc,kriswuollett/grpc,ksophocleous/grpc,perumaalgoog/grpc,ctiller/grpc,ananthonline/grpc,kpayson64/grpc,cgvarela/grpc,miselin/grpc,y-zeng/grpc,goldenbull/grpc,jboeuf/grpc,dklempner/grpc,kpayson64/grpc,PeterFaiman/ruby-grpc-minimal,LuminateWireless/grpc,bjori/grpc,PeterFaiman/ruby-grpc-minimal,sidrakesh93/grpc,adelez/grpc,arkmaxim/grpc,adelez/grpc,pmarks-net/grpc,sidrakesh93/grpc,vsco/grpc,PeterFaiman/ruby-grpc-minimal,MakMukhi/grpc,dgquintas/grpc,LuminateWireless/grpc,larsonmpdx/grpc,fuchsia-mirror/third_party-grpc,soltanmm/grpc,tamihiro/grpc,yonglehou/grpc,wangyikai/grpc,jcanizales/grpc,jboeuf/grpc,gpndata/grpc,ctiller/grpc,dklempner/grpc,jtattermusch/grpc,donnadionne/grpc,jboeuf/grpc,a-veitch/grpc,sreecha/grpc,wkubiak/grpc,daniel-j-born/grpc,ejona86/grpc,rjshade/grpc,perumaalgoog/grpc,yongni/grpc,malexzx/grpc,PeterFaiman/ruby-grpc-minimal,dgquintas/grpc,leifurhauks/grpc,arkmaxim/grpc,soltanmm-google/grpc,quizlet/grpc,quizlet/grpc,daniel-j-born/grpc,dklempner/grpc,vjpai/grpc,larsonmpdx/grpc,msmania/grpc,yongni/grpc,greasypizza/grpc,bogdandrutu/grpc,philcleveland/grpc,stanley-cheung/grpc,msmania/grpc,maxwell-demon/grpc,doubi-workshop/grpc,apolcyn/grpc,yongni/grpc,sreecha/grpc,rjshade/grpc,pmarks-net/grpc,jboeuf/grpc,rjshade/grpc,kskalski/grpc,sidrakesh93/grpc,a-veitch/grpc,vsco/grpc,sreecha/grpc,ctiller/grpc,surround-io/grpc,JoeWoo/grpc,jtattermusch/grpc,y-zeng/grpc,stanley-cheung/grpc,pszemus/grpc,JoeWoo/grpc,yonglehou/grpc,jboeuf/grpc,ctiller/grpc,geffzhang/grpc,LuminateWireless/grpc,fuchsia-mirror/third_party-grpc,donnadionne/grpc,hstefan/grpc,ncteisen/grpc,kpayson64/grpc,zhimingxie/grpc,zeliard/grpc,wangyikai/grpc,VcamX/grpc,doubi-workshop/grpc,gpndata/grpc,adelez/grpc,7anner/grpc,hstefan/grpc,leifurhauks/grpc,royalharsh/grpc,andrewpollock/grpc,meisterpeeps/grpc,kumaralokgithub/grpc,ppietrasa/grpc,y-zeng/grpc,perumaalgoog/grpc,chrisdunelm/grpc,crast/grpc,yongni/grpc,JoeWoo/grpc,JoeWoo/grpc,pszemus/grpc,tamihiro/grpc,bogdandrutu/grpc,mehrdada/grpc,maxwell-demon/grpc,thinkerou/grpc,firebase/grpc,philcleveland/grpc,simonkuang/grpc,a11r/grpc,podsvirov/grpc,rjshade/grpc,royalharsh/grpc,soltanmm-google/grpc,zhimingxie/grpc,nicolasnoble/grpc,wangyikai/grpc,Vizerai/grpc,murgatroid99/grpc,VcamX/grpc,JoeWoo/grpc,gpndata/grpc,yugui/grpc,makdharma/grpc,grpc/grpc,geffzhang/grpc,y-zeng/grpc,tempbottle/grpc,deepaklukose/grpc,maxwell-demon/grpc,andrewpollock/grpc,stanley-cheung/grpc,vsco/grpc,ananthonline/grpc,grpc/grpc,larsonmpdx/grpc,msiedlarek/grpc,ejona86/grpc,mehrdada/grpc,geffzhang/grpc,ppietrasa/grpc,grani/grpc,makdharma/grpc,matt-kwong/grpc,vjpai/grpc,baylabs/grpc,madongfly/grpc,infinit/grpc,PeterFaiman/ruby-grpc-minimal,PeterFaiman/ruby-grpc-minimal,tamihiro/grpc,surround-io/grpc,sidrakesh93/grpc,bogdandrutu/grpc,Vizerai/grpc,carl-mastrangelo/grpc,tempbottle/grpc,jtattermusch/grpc,ctiller/grpc,miselin/grpc,a11r/grpc,podsvirov/grpc,Vizerai/grpc,yongni/grpc,MakMukhi/grpc,maxwell-demon/grpc,madongfly/grpc,simonkuang/grpc,a-veitch/grpc,perumaalgoog/grpc,JoeWoo/grpc,PeterFaiman/ruby-grpc-minimal,donnadionne/grpc,Crevil/grpc,royalharsh/grpc,pszemus/grpc,zhimingxie/grpc,msiedlarek/grpc,a-veitch/grpc,fichter/grpc,tamihiro/grpc,donnadionne/grpc,yugui/grpc,y-zeng/grpc,ksophocleous/grpc,7anner/grpc,doubi-workshop/grpc,msiedlarek/grpc,baylabs/grpc,thunderboltsid/grpc,cgvarela/grpc,daniel-j-born/grpc,arkmaxim/grpc,PeterFaiman/ruby-grpc-minimal,yinsu/grpc,msiedlarek/grpc,perumaalgoog/grpc,Crevil/grpc,matt-kwong/grpc,sidrakesh93/grpc,tengyifei/grpc,mway08/grpc,hstefan/grpc,ncteisen/grpc,leifurhauks/grpc,wangyikai/grpc,andrewpollock/grpc,doubi-workshop/grpc,hstefan/grpc,doubi-workshop/grpc,fichter/grpc,bogdandrutu/grpc,malexzx/grpc,podsvirov/grpc,stanley-cheung/grpc,ananthonline/grpc,msiedlarek/grpc,LuminateWireless/grpc,leifurhauks/grpc,rjshade/grpc,mehrdada/grpc,doubi-workshop/grpc,madongfly/grpc,geffzhang/grpc,ofrobots/grpc,murgatroid99/grpc,pmarks-net/grpc,fuchsia-mirror/third_party-grpc,Crevil/grpc,deepaklukose/grpc,carl-mastrangelo/grpc,yugui/grpc,hstefan/grpc,fichter/grpc,carl-mastrangelo/grpc,ksophocleous/grpc,podsvirov/grpc,dgquintas/grpc,pmarks-net/grpc,Vizerai/grpc,makdharma/grpc,jcanizales/grpc,perumaalgoog/grpc,philcleveland/grpc,carl-mastrangelo/grpc,pszemus/grpc,arkmaxim/grpc,thinkerou/grpc,jtattermusch/grpc,bogdandrutu/grpc,hstefan/grpc,deepaklukose/grpc,ksophocleous/grpc,soltanmm-google/grpc,ejona86/grpc,meisterpeeps/grpc,ananthonline/grpc,y-zeng/grpc,sreecha/grpc,ofrobots/grpc,yinsu/grpc,jcanizales/grpc,nicolasnoble/grpc,msmania/grpc,vsco/grpc,kumaralokgithub/grpc,yinsu/grpc,greasypizza/grpc,thinkerou/grpc,Crevil/grpc,MakMukhi/grpc,larsonmpdx/grpc,bogdandrutu/grpc,chrisdunelm/grpc,maxwell-demon/grpc,zeliard/grpc,pszemus/grpc,pszemus/grpc,a-veitch/grpc,thinkerou/grpc,chrisdunelm/grpc,yang-g/grpc,dklempner/grpc,tengyifei/grpc,7anner/grpc,xtopsoft/grpc,apolcyn/grpc,soltanmm/grpc,apolcyn/grpc,wcevans/grpc,apolcyn/grpc,grpc/grpc,grpc/grpc,tempbottle/grpc,sreecha/grpc,thinkerou/grpc,wcevans/grpc,a-veitch/grpc,maxwell-demon/grpc,stanley-cheung/grpc,ksophocleous/grpc,kskalski/grpc,simonkuang/grpc,Vizerai/grpc,zeliard/grpc,baylabs/grpc,greasypizza/grpc,fichter/grpc,Crevil/grpc,ejona86/grpc,ejona86/grpc,muxi/grpc,nicolasnoble/grpc,goldenbull/grpc,goldenbull/grpc,madongfly/grpc,tamihiro/grpc,chrisdunelm/grpc,daniel-j-born/grpc,ipylypiv/grpc,larsonmpdx/grpc,philcleveland/grpc,adelez/grpc,malexzx/grpc,nicolasnoble/grpc,baylabs/grpc,simonkuang/grpc,a11r/grpc,cgvarela/grpc,dgquintas/grpc,a11r/grpc,kriswuollett/grpc,VcamX/grpc,podsvirov/grpc,kpayson64/grpc,crast/grpc,donnadionne/grpc,geffzhang/grpc,larsonmpdx/grpc,goldenbull/grpc,sreecha/grpc,dgquintas/grpc,fuchsia-mirror/third_party-grpc,jboeuf/grpc,bogdandrutu/grpc,baylabs/grpc,perumaalgoog/grpc,arkmaxim/grpc,makdharma/grpc,firebase/grpc,geffzhang/grpc,kumaralokgithub/grpc,yang-g/grpc,stanley-cheung/grpc,7anner/grpc,a11r/grpc,a11r/grpc,madongfly/grpc,wkubiak/grpc,kumaralokgithub/grpc,bogdandrutu/grpc,soltanmm-google/grpc,pszemus/grpc,geffzhang/grpc,cgvarela/grpc,grpc/grpc,MakMukhi/grpc,nicolasnoble/grpc,grani/grpc,jtattermusch/grpc,stanley-cheung/grpc,simonkuang/grpc,yang-g/grpc,quizlet/grpc,kskalski/grpc,dklempner/grpc,podsvirov/grpc,w4-sjcho/grpc,kriswuollett/grpc,yang-g/grpc,leifurhauks/grpc,cgvarela/grpc,thinkerou/grpc,chrisdunelm/grpc,pszemus/grpc,a-veitch/grpc,simonkuang/grpc,wcevans/grpc,Crevil/grpc,xtopsoft/grpc,larsonmpdx/grpc,dgquintas/grpc,doubi-workshop/grpc,ofrobots/grpc,royalharsh/grpc,mehrdada/grpc,dklempner/grpc,makdharma/grpc,kskalski/grpc,donnadionne/grpc,tempbottle/grpc,meisterpeeps/grpc,bjori/grpc,adelez/grpc,firebase/grpc,makdharma/grpc,crast/grpc,mway08/grpc,miselin/grpc,w4-sjcho/grpc,vsco/grpc,pmarks-net/grpc,kpayson64/grpc,MakMukhi/grpc,wcevans/grpc,apolcyn/grpc,nicolasnoble/grpc,soltanmm/grpc,ppietrasa/grpc,meisterpeeps/grpc,sreecha/grpc,apolcyn/grpc,gpndata/grpc,kskalski/grpc,goldenbull/grpc,soltanmm/grpc,philcleveland/grpc,mway08/grpc,kriswuollett/grpc,kskalski/grpc,yang-g/grpc,msiedlarek/grpc,ncteisen/grpc,matt-kwong/grpc,quizlet/grpc,msmania/grpc,ofrobots/grpc,wcevans/grpc,fuchsia-mirror/third_party-grpc,kumaralokgithub/grpc,ejona86/grpc,yugui/grpc,yinsu/grpc,soltanmm-google/grpc,firebase/grpc,mway08/grpc,ananthonline/grpc,mehrdada/grpc,wcevans/grpc,w4-sjcho/grpc,a11r/grpc,greasypizza/grpc,muxi/grpc,thunderboltsid/grpc,ncteisen/grpc,ejona86/grpc,xtopsoft/grpc,ctiller/grpc,philcleveland/grpc,malexzx/grpc,carl-mastrangelo/grpc,dgquintas/grpc,gpndata/grpc,dgquintas/grpc,mway08/grpc,quizlet/grpc,mehrdada/grpc,ofrobots/grpc,greasypizza/grpc,malexzx/grpc,zhimingxie/grpc,maxwell-demon/grpc,MakMukhi/grpc,ctiller/grpc,malexzx/grpc,msmania/grpc,infinit/grpc,vjpai/grpc,surround-io/grpc,kpayson64/grpc,malexzx/grpc,sreecha/grpc,muxi/grpc,sidrakesh93/grpc,kumaralokgithub/grpc,grpc/grpc,grani/grpc,muxi/grpc,matt-kwong/grpc,wangyikai/grpc,vjpai/grpc,tengyifei/grpc,nicolasnoble/grpc,miselin/grpc,jcanizales/grpc,goldenbull/grpc,podsvirov/grpc,chrisdunelm/grpc,donnadionne/grpc,mehrdada/grpc,grpc/grpc,surround-io/grpc,kriswuollett/grpc,ejona86/grpc,ctiller/grpc,meisterpeeps/grpc,kriswuollett/grpc,vjpai/grpc,vjpai/grpc,ppietrasa/grpc,kriswuollett/grpc,firebase/grpc,xtopsoft/grpc,tempbottle/grpc,royalharsh/grpc,bjori/grpc,fichter/grpc,Vizerai/grpc,soltanmm-google/grpc,thinkerou/grpc,chrisdunelm/grpc,andrewpollock/grpc,rjshade/grpc,jboeuf/grpc,LuminateWireless/grpc,apolcyn/grpc,grpc/grpc,thinkerou/grpc,yinsu/grpc,fichter/grpc,hstefan/grpc,murgatroid99/grpc,soltanmm/grpc,murgatroid99/grpc,sidrakesh93/grpc,quizlet/grpc,ejona86/grpc,adelez/grpc,zeliard/grpc,vsco/grpc,ipylypiv/grpc,soltanmm/grpc,mway08/grpc,Vizerai/grpc,madongfly/grpc,a11r/grpc,jcanizales/grpc,7anner/grpc,soltanmm/grpc,mehrdada/grpc,tengyifei/grpc,apolcyn/grpc,wcevans/grpc,vjpai/grpc,ctiller/grpc,surround-io/grpc,tengyifei/grpc,ncteisen/grpc,chrisdunelm/grpc,leifurhauks/grpc,ofrobots/grpc,VcamX/grpc,pszemus/grpc,wcevans/grpc,firebase/grpc,ncteisen/grpc,surround-io/grpc,kpayson64/grpc,donnadionne/grpc,JoeWoo/grpc,royalharsh/grpc,JoeWoo/grpc,royalharsh/grpc,infinit/grpc,kriswuollett/grpc,murgatroid99/grpc,dgquintas/grpc,maxwell-demon/grpc,nicolasnoble/grpc,msmania/grpc,xtopsoft/grpc,miselin/grpc,wangyikai/grpc,kpayson64/grpc,donnadionne/grpc,muxi/grpc,infinit/grpc,tempbottle/grpc,tempbottle/grpc,yonglehou/grpc,leifurhauks/grpc,quizlet/grpc,yang-g/grpc,surround-io/grpc,meisterpeeps/grpc,yinsu/grpc,quizlet/grpc,wkubiak/grpc,ananthonline/grpc,ppietrasa/grpc,jcanizales/grpc,thunderboltsid/grpc,y-zeng/grpc,thunderboltsid/grpc,kumaralokgithub/grpc,ananthonline/grpc,jboeuf/grpc,zhimingxie/grpc,muxi/grpc,jboeuf/grpc,y-zeng/grpc,jboeuf/grpc,jboeuf/grpc,ipylypiv/grpc,ctiller/grpc,Crevil/grpc,murgatroid99/grpc,philcleveland/grpc,bjori/grpc,ipylypiv/grpc,simonkuang/grpc,yinsu/grpc,philcleveland/grpc,sreecha/grpc,zhimingxie/grpc,bjori/grpc,adelez/grpc,grpc/grpc,larsonmpdx/grpc,zeliard/grpc,hstefan/grpc,Crevil/grpc,larsonmpdx/grpc,ksophocleous/grpc,thunderboltsid/grpc,MakMukhi/grpc,greasypizza/grpc,grani/grpc,yugui/grpc,yang-g/grpc,sidrakesh93/grpc,malexzx/grpc,yugui/grpc,kskalski/grpc,wkubiak/grpc,ejona86/grpc,MakMukhi/grpc,rjshade/grpc,leifurhauks/grpc,kriswuollett/grpc,nicolasnoble/grpc,zeliard/grpc,vjpai/grpc,soltanmm-google/grpc,pszemus/grpc,y-zeng/grpc,muxi/grpc,vjpai/grpc,bjori/grpc,w4-sjcho/grpc,w4-sjcho/grpc,meisterpeeps/grpc,royalharsh/grpc,dklempner/grpc,a11r/grpc,ananthonline/grpc,gpndata/grpc,andrewpollock/grpc,deepaklukose/grpc,matt-kwong/grpc,msmania/grpc,vsco/grpc,royalharsh/grpc,yongni/grpc,stanley-cheung/grpc,7anner/grpc,LuminateWireless/grpc,cgvarela/grpc,carl-mastrangelo/grpc,bjori/grpc,baylabs/grpc,ncteisen/grpc,jtattermusch/grpc,miselin/grpc,sreecha/grpc,adelez/grpc,kpayson64/grpc,quizlet/grpc,grpc/grpc,dgquintas/grpc,deepaklukose/grpc,crast/grpc,fichter/grpc,simonkuang/grpc,jtattermusch/grpc,PeterFaiman/ruby-grpc-minimal,7anner/grpc,JoeWoo/grpc,ananthonline/grpc,nicolasnoble/grpc,yang-g/grpc,jtattermusch/grpc,ctiller/grpc,firebase/grpc,crast/grpc,yinsu/grpc,andrewpollock/grpc,wcevans/grpc,zhimingxie/grpc,zeliard/grpc,madongfly/grpc,leifurhauks/grpc,ipylypiv/grpc,pszemus/grpc,arkmaxim/grpc,baylabs/grpc,goldenbull/grpc,Vizerai/grpc,chrisdunelm/grpc,philcleveland/grpc,muxi/grpc,yongni/grpc,nicolasnoble/grpc,yonglehou/grpc,deepaklukose/grpc,carl-mastrangelo/grpc,ofrobots/grpc,maxwell-demon/grpc,daniel-j-born/grpc,muxi/grpc,makdharma/grpc,tamihiro/grpc,stanley-cheung/grpc,makdharma/grpc,wkubiak/grpc,pszemus/grpc,ofrobots/grpc,tamihiro/grpc,jtattermusch/grpc,soltanmm-google/grpc,thunderboltsid/grpc,wangyikai/grpc,geffzhang/grpc,wangyikai/grpc,carl-mastrangelo/grpc,tengyifei/grpc,infinit/grpc,bjori/grpc,murgatroid99/grpc,podsvirov/grpc,gpndata/grpc,donnadionne/grpc,a-veitch/grpc,yugui/grpc,yonglehou/grpc,msiedlarek/grpc,deepaklukose/grpc,arkmaxim/grpc,jtattermusch/grpc,mehrdada/grpc,stanley-cheung/grpc,ksophocleous/grpc,VcamX/grpc,muxi/grpc,deepaklukose/grpc,ipylypiv/grpc,msmania/grpc,firebase/grpc,nicolasnoble/grpc,arkmaxim/grpc,tamihiro/grpc,kskalski/grpc,ncteisen/grpc,xtopsoft/grpc,miselin/grpc,jtattermusch/grpc,mway08/grpc,fuchsia-mirror/third_party-grpc,tengyifei/grpc,murgatroid99/grpc,andrewpollock/grpc,soltanmm/grpc,zhimingxie/grpc,muxi/grpc,vjpai/grpc,yinsu/grpc,donnadionne/grpc,ppietrasa/grpc,sreecha/grpc,gpndata/grpc,hstefan/grpc,jboeuf/grpc,simonkuang/grpc,Vizerai/grpc,meisterpeeps/grpc,Vizerai/grpc,rjshade/grpc,kpayson64/grpc,geffzhang/grpc,ppietrasa/grpc,bjori/grpc,grpc/grpc,doubi-workshop/grpc,pmarks-net/grpc,LuminateWireless/grpc,goldenbull/grpc,soltanmm/grpc,mehrdada/grpc,mehrdada/grpc,LuminateWireless/grpc,andrewpollock/grpc,grpc/grpc,chrisdunelm/grpc,wkubiak/grpc,a-veitch/grpc,sreecha/grpc,firebase/grpc,vsco/grpc,PeterFaiman/ruby-grpc-minimal,daniel-j-born/grpc,murgatroid99/grpc,rjshade/grpc,jcanizales/grpc,crast/grpc,pmarks-net/grpc,ncteisen/grpc,carl-mastrangelo/grpc,kumaralokgithub/grpc,pmarks-net/grpc,zhimingxie/grpc,greasypizza/grpc,msiedlarek/grpc,yang-g/grpc,grani/grpc,makdharma/grpc,thinkerou/grpc,daniel-j-born/grpc,thunderboltsid/grpc,infinit/grpc,cgvarela/grpc,matt-kwong/grpc,crast/grpc,wkubiak/grpc