update_mdc: make --really a flag

Description

This was always meant to be used as --really, but due to an oversight, it had to be given a value, as in --really 1.

How Has This Been Tested?

Used the script.

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the code style of this project.

Reviewers

@ahmedk @roscar

webservice/update_mdc.py

@@ -27,7 +27,8 @@ parser.add_argument('--runs', type=parse_int_range,
 parser.add_argument('--rid', type=int, help='Run id from MDC')
 parser.add_argument('--msg', type=str, help='Message string to MDC',
                     default='Error while job submission')
-parser.add_argument('--really', help="Actually make changes (otherwise dry-run)")
+parser.add_argument('--really', action='store_true',
+                    help="Actually make changes (otherwise dry-run)")
 args = parser.parse_args()
 
 if args.conf_file is not None: