fix for #6834
fix for #6834

Removed constants kPackageName and kServiceName so multiple services
can be defined in one proto.

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