Update setup.py (#30522)
Update setup.py (#30522)

* Update setup.py

to make build success.

* PR:#30522, Google Style, yapf -i --style google setup.py
ctiller/grpc,jtattermusch/grpc,grpc/grpc,jtattermusch/grpc,ejona86/grpc,stanley-cheung/grpc,stanley-cheung/grpc,ejona86/grpc,ejona86/grpc,stanley-cheung/grpc,stanley-cheung/grpc,grpc/grpc,ejona86/grpc,jtattermusch/grpc,ejona86/grpc,jtattermusch/grpc,jtattermusch/grpc,grpc/grpc,stanley-cheung/grpc,jtattermusch/grpc,ctiller/grpc,ctiller/grpc,ctiller/grpc,grpc/grpc,ctiller/grpc,jtattermusch/grpc,jtattermusch/grpc,ejona86/grpc,ctiller/grpc,jtattermusch/grpc,jtattermusch/grpc,grpc/grpc,ctiller/grpc,stanley-cheung/grpc,grpc/grpc,jtattermusch/grpc,stanley-cheung/grpc,ejona86/grpc,stanley-cheung/grpc,ctiller/grpc,stanley-cheung/grpc,stanley-cheung/grpc,grpc/grpc,stanley-cheung/grpc,jtattermusch/grpc,grpc/grpc,ejona86/grpc,ejona86/grpc,grpc/grpc,stanley-cheung/grpc,ctiller/grpc,grpc/grpc,ejona86/grpc,grpc/grpc,ctiller/grpc,ejona86/grpc,ctiller/grpc,grpc/grpc,ctiller/grpc,ejona86/grpc