sockets: add missing build tags
sockets: add missing build tags

  level=error msg="[linters context] typechecking error: D:\\a\\go-connections\\go-connections\\sockets\\unix_socket_test.go:41:12: undeclared name: NewUnixSocket"
  level=error msg="[linters context] typechecking error: D:\\a\\go-connections\\go-connections\\sockets\\unix_socket_test.go:54:12: undeclared name: NewUnixSocketWithOpts"
  level=error msg="[linters context] typechecking error: D:\\a\\go-connections\\go-connections\\sockets\\unix_socket_test.go:54:40: undeclared name: WithChown"
  level=error msg="[linters context] typechecking error: D:\\a\\go-connections\\go-connections\\sockets\\unix_socket_test.go:54:61: undeclared name: WithChmod"
  level=error msg="[linters context] typechecking error: D:\\a\\go-connections\\go-connections\\sockets\\unix_socket_test.go:66:35: Stat_t not declared by package syscall"

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

docker/go-connections