YDA-6104: display role changes on group import

When importing groups from a CSV file in the group
manager, the portal did not show any role changes, which
made it look like role changes were not processed.

This fix ensures that users can see any role changes that
are made as a result of an import with the update flag
enabled.

groups.py

@@ -565,7 +565,7 @@ def apply_data(ctx: rule.Context, data: Dict, allow_update: bool, delete_users:
 
     for (category, subcategory, group_name, managers, members, viewers, schema_id, expiration_date) in data:
         new_group = False
-        users_added, users_removed = 0, 0
+        users_added, users_removed, roles_changed = 0, 0, 0
         message = ''
 
         log.write(ctx, 'CSV import - Adding and updating group: {}'.format(group_name))
@@ -613,6 +613,7 @@ def apply_data(ctx: rule.Context, data: Dict, allow_update: bool, delete_users:
                 log.write(ctx, "CSV import - Notice: user {} already has role {} in group {}.".format(username, role, group_name))
             else:
                 response = group_user_update_role(ctx, username, group_name, role)
+                roles_changed += 1
 
                 if response:
                     log.write(ctx, "CSV import - Notice: changed role of user {} in group {} to {}".format(username, group_name, role))
@@ -668,9 +669,11 @@ def apply_data(ctx: rule.Context, data: Dict, allow_update: bool, delete_users:
             message += ' Users added ({}).'.format(users_added)
         if users_removed > 0:
             message += ' Users removed ({}).'.format(users_removed)
+        if roles_changed > 0:
+            message += ' Roles changed ({}).'.format(roles_changed)
 
         # If no users added, no users removed and not new group created.
-        if not users_added and not users_removed and not new_group:
+        if not any((users_added, users_removed, roles_changed, new_group)):
             message += ' No changes made.'
 
     return {"status": "ok", "message": message}