Merge branch 'master' of github.com:grpc/grpc into grpclb_api

.gitignore

build.yaml

src/boringssl/gen_build_yaml.py

src/core/transport/chttp2/timeout_encoding.c

src/python/grpcio/tests/unit/_cython/_channel_test.py

templates/tools/run_tests/tests.json.template

test/core/bad_client/gen_build_yaml.py

test/core/bad_ssl/gen_build_yaml.py

test/core/end2end/gen_build_yaml.py

test/core/fling/client.c

test/core/support/avl_test.c

test/core/transport/chttp2/timeout_encoding_test.c

test/cpp/qps/qps_driver.cc

test/cpp/qps/qps_worker.cc

test/cpp/qps/qps_worker.h

test/cpp/qps/worker.cc

tools/buildgen/build-cleaner.py

tools/distrib/check_copyright.py

tools/run_tests/build_artifact_csharp.bat

tools/run_tests/build_artifacts.py