[add] -P to restore help in mcs_backup_restore.sh
[fix] -f argument default value in both backup and restore wrapper commands
[fix] -i argument behaviour and type + default value
[fix] -P argument position and help for both backup and restore wrapper commands
[fix] disable some pylint warning for both backup and restore wrapper files
- [fix] wrong cooking of .sh invoke string
- [fix] restore_dbrm -> dbrm_restore, backup_dbrm -> dbrm_backup to use same naming in both python wrapper and mcs_backup_manager.sh
- [fix] mathod of checking cmapi online or not in mcs_backup_manager.sh