failed to get some group IDs if there is more than 20 groups

[sswv]

Hello,

I found that gitlab_clone failed to get some group IDs if there is more than 20 groups in GitLab.

The reason is: the API for listing groups returns 20 results at a time because the API results are paginated.

A workaround is to use groups?per_page=100 for listing groups, but it still has a limitation: 100. A better way is to deal with pagination in gitlab_clone.

Thanks!