gitlab: add groups scope by default when filtering is requested

[bonifaido]

Fixes: #1518

[srenatus]

This needs documentation, I believe. Can you add a note to the config comments for this connector? Also, I think it might be a bit misleading if this logic only applies to the gitlab connector. The other similarly whitelisting connectors don't do this, do they?

IMHO that's another small argument for moving any group-related filtering out of the connectors and into the server handler 🤔

[bonifaido]

I think now it works like as it should by default, this is the way as the github and bitbucket connectors work. They all add the group scope by default if the whitelisting/filtering is requested, this was missing from gitlab.

Adding this to the server handler would have its benefits, but GitHub connector which supports teams as well is an outlier in this case and I haven't checked the others.

[srenatus]

They all add the group scope by default if the whitelisting/filtering is requested, this was missing from gitlab.

Ah. I wasn't aware of this. Thanks.