handle auth

modzip vcs-test.golang.org/auth/or401/@v/v0.0.0-20190405155051-52df474c8a8b.zip vcs-test.golang.org/auth/or401@v0.0.0-20190405155051-52df474c8a8b .moddir

-- .access --
{
	"Username": "aladdin",
	"Password": "opensesame",
	"StatusCode": 401,
	"Message": "ACCESS DENIED, buddy"
}
-- index.html --
<!DOCTYPE html>
<html>
<meta name="go-import" content="vcs-test.golang.org/auth/or401 mod https://vcs-test.golang.org/auth/or401">
-- vcs-test.golang.org/auth/or401/@v/list --
v0.0.0-20190405155051-52df474c8a8b
-- vcs-test.golang.org/auth/or401/@v/v0.0.0-20190405155051-52df474c8a8b.info --
{"Version":"v0.0.0-20190405155051-52df474c8a8b","Time":"2019-04-05T15:50:51Z"}
-- vcs-test.golang.org/auth/or401/@v/v0.0.0-20190405155051-52df474c8a8b.mod --
module vcs-test.golang.org/auth/or401

go 1.13
-- .moddir/go.mod --
module vcs-test.golang.org/auth/or401

go 1.13
-- .moddir/or401.go --
package or401