The net package supports Unix domain sockets on Windows, but most of
the tests related to them are skipped.
This CL unskip the SOCK_STREAM tests. SOCK_DGRAM probablye can also
make to work, but that will come in a follow-up CL.
Change-Id: If9506a8af57e9bfe58bd7b48a98fc39335627a61
Reviewed-on: https://go-review.googlesource.com/c/go/+/660915
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
