Updated changes for Windows, removed unistd.h from test files

src/core/lib/iomgr/resolve_address_windows.c

src/core/lib/iomgr/tcp_server_windows.c

test/core/end2end/fixtures/h2_full+trace.c

test/core/end2end/fixtures/h2_sockpair+trace.c

test/core/util/port_windows.c