Description of the problem, including code/CLI snippet

Documentation is missing an example how to make use of project import parameters.
The Gitlab-API supports these parameters (name,file,path,overwrite)

Expected Behavior

It would be good to add an example to the documentation (if those parameters are supported)

Actual Behavior

Specifications

• python-gitlab versi

Currently if you try to clone a repository from github and you don't have any ssh keys configured at github, you will fail to clone and get such message:

Fatal error: fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

Even Permission denied (publickey). message is not shown.

@guyzmo offered to "suggest a

See scala/scala-xml#359 (comment).

Hi,
Now that we have nested group in gitlab since v9 it would be very interesting to implement it in gitlab-mirrors.
Would be super useful, as we could mirror several git repositories of a unique project to a unique sub group in a base "gitlab-mirrors" group (wow!)

Cheers

Support for Gogs was recently added and some help adding tests would be appreciated.