clang-format all the files.

Whenever we run clang-format, gen_build_yaml.py and
ServerServiceDefinitionExtensions.cs get modified by the script.

Let's commit those changes so that these file remain unmodified
after running the formatting script.

src/csharp/Grpc.Core/Interceptors/ServerServiceDefinitionExtensions.cs

@@ -76,4 +76,4 @@ namespace Grpc.Core.Interceptors
             return serverServiceDefinition;
         }
     }
-}
+}

test/cpp/qps/gen_build_yaml.py

@@ -131,4 +131,4 @@ def generate_yaml():
   }
 
 
-print(yaml.dump(generate_yaml()))
+print(yaml.dump(generate_yaml()))