Explicitly stop the server on tear-down

Simple PID controller

Release target once pinged

Say what we mean

Use Jessie instead of Ubuntu Dockerfile for GCC-4.8 tests

Change tests to use channel args instead of fake_resolver query args.

Integrate google_benchmark

Fixed wrong sign for dns timeout debug msg

Avoid compiler error in Ruby build on clang-7.3

Fixed use of unalloc'd memory

Removing dependency between tsi and grpc.

Correctly count port indices and siblings.

Update standard Linux worker spec

This reverts commit 029ed106.

Stop supporting non-C++11 conformant compilers - DO NOT MERGE INTO V1.0.X

Send RST_STREAM from client when it receives trailing metadata without the corresponding RST_STREAM

Use the right address family

RR: Don't copy user_data if no vtable

Disable gcc4.4 C++ tests - DO NOT MERGE INTO V1.0.X