update and remove actions are working properly now

While using this cookbook in our project, I found out that only the create action was working correctly but the update action was buggy (did not fail on converge but could not update the user's info correctly) and the remove action was getting exception and not working at all. So, I made the changes to update and remove action in users.rb file. Create, update and remove actions for users are working correctly now in our production rundeck server.