* add a custom module for managing group membership in gitlab
* add integration test & modify the module
* modify the module
* modify the module
* remove whitespace
* add aliases file & modify the module
* minor and suggested modifications
* suggested modifications
* more minor modifications
* modified the module to use gitlabAuth
* removed api_url from the doc
* remove api_token
* add update access level for an existing user
* remove access level if statement
(cherry picked from commit 905239f530)
Co-authored-by: Zainab Alsaffar <za5775@rit.edu>