Add logging for invalid client PayloadConfig in QPS test (#30261)
Add logging for invalid client PayloadConfig in QPS test (#30261)

* Add invalid PayloadConfig logging to QPS test

* flip conditions
stanley-cheung/grpc,jtattermusch/grpc,ctiller/grpc,stanley-cheung/grpc,grpc/grpc,grpc/grpc,jtattermusch/grpc,ejona86/grpc,grpc/grpc,stanley-cheung/grpc,grpc/grpc,grpc/grpc,grpc/grpc,ejona86/grpc,jtattermusch/grpc,stanley-cheung/grpc,stanley-cheung/grpc,ctiller/grpc,ctiller/grpc,ctiller/grpc,jtattermusch/grpc,ctiller/grpc,ejona86/grpc,jtattermusch/grpc,grpc/grpc,stanley-cheung/grpc,ctiller/grpc,jtattermusch/grpc,ejona86/grpc,ejona86/grpc,ejona86/grpc,ctiller/grpc,grpc/grpc,ejona86/grpc,stanley-cheung/grpc,stanley-cheung/grpc,ctiller/grpc,jtattermusch/grpc,ctiller/grpc,grpc/grpc,jtattermusch/grpc,ejona86/grpc,ctiller/grpc,grpc/grpc,jtattermusch/grpc,ctiller/grpc,jtattermusch/grpc,ejona86/grpc,stanley-cheung/grpc,jtattermusch/grpc,ejona86/grpc,stanley-cheung/grpc,grpc/grpc,stanley-cheung/grpc,grpc/grpc,ctiller/grpc,ejona86/grpc,jtattermusch/grpc,ejona86/grpc,stanley-cheung/grpc