Make lb_policies_test a little less timing dependent
Make lb_policies_test a little less timing dependent

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