Merge pull request #8219 from markdroth/fail_fast

doc/core/pending_api_cleanups.md

doc/cpp/pending_api_cleanups.md

include/grpc++/impl/codegen/client_context.h

include/grpc/impl/codegen/grpc_types.h

src/core/ext/client_config/client_channel.c

src/cpp/client/client_context.cc

test/core/bad_ssl/bad_ssl_test.c

test/core/end2end/connection_refused_test.c

test/core/end2end/dualstack_socket_test.c

test/core/end2end/tests/simple_delayed_request.c

test/cpp/end2end/client_crash_test.cc

test/cpp/end2end/hybrid_end2end_test.cc

test/cpp/end2end/server_crash_test_client.cc

test/cpp/qps/driver.cc