Merge branch 'master' into stress_exit_codes

BUILD

Makefile

build.yaml

src/core/ext/transport/chttp2/transport/hpack_parser.c

src/core/ext/transport/chttp2/transport/hpack_table.c

src/core/lib/channel/channel_args.h

src/core/lib/client_config/lb_policies/pick_first.c

src/core/lib/client_config/lb_policies/round_robin.c

src/core/lib/client_config/lb_policy_factory.c

src/core/lib/client_config/lb_policy_factory.h

src/core/lib/client_config/lb_policy_registry.c

src/core/lib/client_config/lb_policy_registry.h

src/core/lib/client_config/resolvers/dns_resolver.c

src/core/lib/client_config/resolvers/sockaddr_resolver.c

src/core/lib/client_config/resolvers/zookeeper_resolver.c

src/core/lib/http/parser.c

src/core/lib/iomgr/pollset_set_windows.c

src/core/lib/json/json_reader.c

src/python/grpcio/precompiled.py

src/ruby/ext/grpc/rb_byte_buffer.c