CLC-4013 - Updated Canvas::MaintainAllUsers#canvas_user_report_file to return existing file path if report already loaded
CLC-4013 - Adjusted script to pull Canvas user report before loading Active Calnet users into memory for processing
CLC-4013 - Set @active_sis_users to nil after processing remaining new users to save memory
Merge pull request #2776 from redconfetti/CLC-4013-maintain-all-users-mem-fix

CLC-4013 - Refactor for memory conservation