client_config: chttp2_fullstack_no_op_unsecure_test passes

src/core/client_config/connector.c

src/core/client_config/connector.h

src/core/client_config/resolver_factory.c

src/core/client_config/subchannel.c

src/core/client_config/subchannel.h

src/core/client_config/subchannel_factory.h

src/core/surface/channel_create.c