Merge pull request #11309 from murgatroid99/master_1.3.x_upmerge

CMakeLists.txt

Makefile

build.yaml

grpc.def

include/grpc/grpc.h

src/core/ext/filters/client_channel/channel_connectivity.c

src/core/ext/filters/client_channel/client_channel.c

src/core/ext/filters/client_channel/client_channel.h

src/csharp/Grpc.Auth/Grpc.Auth.csproj

src/csharp/Grpc.Core.Testing/Grpc.Core.Testing.csproj

src/csharp/Grpc.Core/Channel.cs

src/csharp/Grpc.Core/Grpc.Core.csproj

src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.csproj

src/csharp/Grpc.Reflection/Grpc.Reflection.csproj

src/csharp/build_packages_dotnetcli.bat

src/csharp/build_packages_dotnetcli.sh

src/node/ext/call.cc

src/node/ext/call.h

src/node/src/client.js

src/node/test/common_test.js