Lists, adds, or removes super admin users on a multisite installation.
# List user with super-admin capabilities.
$ wp super-admin list
supervisor
administrator
# Grant super-admin privileges to the user.
$ wp super-admin add superadmin2
Success: Granted super-admin capabilities to 1 user.
# Revoke super-admin privileges from the user.
$ wp super-admin remove superadmin2
Success: Revoked super-admin capabilities from 1 user.
