Add explicit license to grpcio-tools setup.py
Add explicit license to grpcio-tools setup.py

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