Fix client channel code to parse server URI from channel arg.
Fix client channel code to parse server URI from channel arg.

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