[COOK-4735] sql_server cookbook SysPrep support

Add setup_action, role and feature_list attribute
Execute SQL PrepareImage and CompleteImage through windows_task due to
KB2773898
Don't create TCP Reg key if SQL is not being installed or CompleteImaged
Don't render service user sections of template if setup_action is PrepareImage
Don't render feature or role sections of template if setup_action is CompleteImage