Correct import path of golang-github-oklog-ulid and some other packages

[Vipul Kumar <kumar@onenetbeyond.org>]

Hi,

In debian/control file of "golang-github-oklog-ulid" package, 
"XS-Go-Import-Path"[1] field has "github.com/oklog/ulid" as its value. 
Shouldn't it be "github.com/oklog/ulid/v2"? Upstream[2] along with 
packages[3] which require ulid package as its dependency, uses 
"github.com/oklog/ulid/v2" as its import path.

[1]: https://salsa.debian.org/go-team/packages/golang-github-oklog 
ulid/-/blob/debian/sid/debian/control#L14
[2]: https://github.com/oklog/ulid#install
[3]: https://gitlab.com/gitlab-org/labkit/blob/v1.10.0/go.mod#L15

I noticed, similar thing with some other packages:

  - golang-android-soong (android/soong)
      No hostname present in import path.

  - json2file-go (https://salsa.debian.org/sto/json2file-go)
      Import path contains protocol information (i.e. https://).

  - obfs4proxy (gitlab.com/yawning/obfs4.git)
  - golang-goptlib (git.torproject.org/pluggable-transports/goptlib.git)
  - snowflake (git.torproject.org/pluggable-transports/snowflake.git)
      Import path contains ".git" suffix, but for all these three 
import paths, "go get" command is working. Is it common practice to use 
".git" suffix in import path? Also, note that, all these three packages 
are maintained under "Privacy Tools" group.


Cheers,
Vipul