Map user to admin group

[yavorivanov-cw]

We have the following ID token:

 ...,
  "ldap_groups": [
    "group1",
    "group2",
    "group3",
    "group4",
    "admin"
  ],
...

Unfortunately the user is still not an admin. We think that this is because of the displaName of the group which in our nextcloud are shown as hashes.
Most likely related to #626

[edward-ly]

I could be wrong, but I believe the Nextcloud admin group is specified under resource_access.nextcloud.roles (see #799 for an example). If that doesn't work and you're still having trouble, let us know.