Fix TSAN json_run_localhost flake
Fix TSAN json_run_localhost flake

deepaklukose/grpc,jtattermusch/grpc,dgquintas/grpc,nicolasnoble/grpc,kpayson64/grpc,thinkerou/grpc,geffzhang/grpc,firebase/grpc,fuchsia-mirror/third_party-grpc,jboeuf/grpc,donnadionne/grpc,sreecha/grpc,carl-mastrangelo/grpc,muxi/grpc,simonkuang/grpc,fuchsia-mirror/third_party-grpc,kpayson64/grpc,Vizerai/grpc,geffzhang/grpc,stanley-cheung/grpc,carl-mastrangelo/grpc,grpc/grpc,ctiller/grpc,ncteisen/grpc,donnadionne/grpc,mehrdada/grpc,murgatroid99/grpc,nicolasnoble/grpc,murgatroid99/grpc,thinkerou/grpc,dgquintas/grpc,grpc/grpc,sreecha/grpc,carl-mastrangelo/grpc,nicolasnoble/grpc,donnadionne/grpc,chrisdunelm/grpc,deepaklukose/grpc,dgquintas/grpc,ejona86/grpc,ncteisen/grpc,muxi/grpc,jboeuf/grpc,thinkerou/grpc,dgquintas/grpc,stanley-cheung/grpc,mehrdada/grpc,stanley-cheung/grpc,chrisdunelm/grpc,deepaklukose/grpc,jboeuf/grpc,sreecha/grpc,PeterFaiman/ruby-grpc-minimal,jboeuf/grpc,grpc/grpc,PeterFaiman/ruby-grpc-minimal,jtattermusch/grpc,adelez/grpc,nicolasnoble/grpc,sreecha/grpc,jboeuf/grpc,grpc/grpc,nicolasnoble/grpc,simonkuang/grpc,sreecha/grpc,deepaklukose/grpc,geffzhang/grpc,simonkuang/grpc,jtattermusch/grpc,nicolasnoble/grpc,jtattermusch/grpc,donnadionne/grpc,PeterFaiman/ruby-grpc-minimal,nicolasnoble/grpc,jboeuf/grpc,firebase/grpc,Vizerai/grpc,ncteisen/grpc,murgatroid99/grpc,murgatroid99/grpc,muxi/grpc,vjpai/grpc,stanley-cheung/grpc,PeterFaiman/ruby-grpc-minimal,ejona86/grpc,murgatroid99/grpc,ctiller/grpc,grpc/grpc,simonkuang/grpc,sreecha/grpc,ctiller/grpc,PeterFaiman/ruby-grpc-minimal,jtattermusch/grpc,PeterFaiman/ruby-grpc-minimal,carl-mastrangelo/grpc,kpayson64/grpc,nicolasnoble/grpc,simonkuang/grpc,vjpai/grpc,mehrdada/grpc,ctiller/grpc,chrisdunelm/grpc,vjpai/grpc,adelez/grpc,vjpai/grpc,chrisdunelm/grpc,muxi/grpc,ctiller/grpc,pszemus/grpc,ctiller/grpc,stanley-cheung/grpc,sreecha/grpc,chrisdunelm/grpc,donnadionne/grpc,kpayson64/grpc,mehrdada/grpc,adelez/grpc,thinkerou/grpc,ncteisen/grpc,donnadionne/grpc,mehrdada/grpc,sreecha/grpc,grpc/grpc,firebase/grpc,geffzhang/grpc,grpc/grpc,donnadionne/grpc,ejona86/grpc,jtattermusch/grpc,kpayson64/grpc,dgquintas/grpc,ejona86/grpc,chrisdunelm/grpc,mehrdada/grpc,ncteisen/grpc,jtattermusch/grpc,thinkerou/grpc,jtattermusch/grpc,adelez/grpc,ncteisen/grpc,jboeuf/grpc,pszemus/grpc,pszemus/grpc,ejona86/grpc,ncteisen/grpc,stanley-cheung/grpc,kpayson64/grpc,carl-mastrangelo/grpc,muxi/grpc,geffzhang/grpc,ejona86/grpc,nicolasnoble/grpc,Vizerai/grpc,mehrdada/grpc,nicolasnoble/grpc,Vizerai/grpc,Vizerai/grpc,adelez/grpc,stanley-cheung/grpc,ctiller/grpc,PeterFaiman/ruby-grpc-minimal,sreecha/grpc,carl-mastrangelo/grpc,firebase/grpc,donnadionne/grpc,muxi/grpc,donnadionne/grpc,adelez/grpc,jboeuf/grpc,pszemus/grpc,simonkuang/grpc,grpc/grpc,carl-mastrangelo/grpc,ctiller/grpc,deepaklukose/grpc,stanley-cheung/grpc,fuchsia-mirror/third_party-grpc,ctiller/grpc,firebase/grpc,deepaklukose/grpc,Vizerai/grpc,sreecha/grpc,muxi/grpc,stanley-cheung/grpc,firebase/grpc,simonkuang/grpc,thinkerou/grpc,pszemus/grpc,jboeuf/grpc,chrisdunelm/grpc,fuchsia-mirror/third_party-grpc,PeterFaiman/ruby-grpc-minimal,thinkerou/grpc,fuchsia-mirror/third_party-grpc,fuchsia-mirror/third_party-grpc,carl-mastrangelo/grpc,kpayson64/grpc,muxi/grpc,jtattermusch/grpc,vjpai/grpc,adelez/grpc,fuchsia-mirror/third_party-grpc,thinkerou/grpc,thinkerou/grpc,firebase/grpc,muxi/grpc,pszemus/grpc,mehrdada/grpc,jboeuf/grpc,ncteisen/grpc,donnadionne/grpc,pszemus/grpc,Vizerai/grpc,PeterFaiman/ruby-grpc-minimal,donnadionne/grpc,ctiller/grpc,geffzhang/grpc,ctiller/grpc,chrisdunelm/grpc,firebase/grpc,jtattermusch/grpc,sreecha/grpc,simonkuang/grpc,pszemus/grpc,firebase/grpc,murgatroid99/grpc,vjpai/grpc,geffzhang/grpc,dgquintas/grpc,murgatroid99/grpc,ejona86/grpc,Vizerai/grpc,stanley-cheung/grpc,jboeuf/grpc,pszemus/grpc,chrisdunelm/grpc,ejona86/grpc,mehrdada/grpc,jtattermusch/grpc,murgatroid99/grpc,grpc/grpc,thinkerou/grpc,deepaklukose/grpc,jboeuf/grpc,PeterFaiman/ruby-grpc-minimal,dgquintas/grpc,muxi/grpc,vjpai/grpc,thinkerou/grpc,kpayson64/grpc,muxi/grpc,pszemus/grpc,ejona86/grpc,fuchsia-mirror/third_party-grpc,Vizerai/grpc,chrisdunelm/grpc,adelez/grpc,kpayson64/grpc,vjpai/grpc,ncteisen/grpc,ncteisen/grpc,carl-mastrangelo/grpc,firebase/grpc,vjpai/grpc,ncteisen/grpc,fuchsia-mirror/third_party-grpc,ncteisen/grpc,pszemus/grpc,dgquintas/grpc,jtattermusch/grpc,ejona86/grpc,nicolasnoble/grpc,muxi/grpc,vjpai/grpc,kpayson64/grpc,deepaklukose/grpc,geffzhang/grpc,ejona86/grpc,mehrdada/grpc,nicolasnoble/grpc,dgquintas/grpc,geffzhang/grpc,carl-mastrangelo/grpc,deepaklukose/grpc,fuchsia-mirror/third_party-grpc,donnadionne/grpc,grpc/grpc,mehrdada/grpc,carl-mastrangelo/grpc,grpc/grpc,sreecha/grpc,Vizerai/grpc,carl-mastrangelo/grpc,stanley-cheung/grpc,murgatroid99/grpc,vjpai/grpc,murgatroid99/grpc,firebase/grpc,dgquintas/grpc,pszemus/grpc,chrisdunelm/grpc,ctiller/grpc,Vizerai/grpc,mehrdada/grpc,simonkuang/grpc,adelez/grpc,grpc/grpc,vjpai/grpc,firebase/grpc,ejona86/grpc,thinkerou/grpc,dgquintas/grpc,kpayson64/grpc,stanley-cheung/grpc