qvm-device: add --force flag for dom0 device attachment

Fixes: QubesOS/qubes-issues#10825

Author: nihalxkumar

qubesadmin/tools/qvm_device.py

@@ -229,6 +229,8 @@ def attach_device(args):
     options = dict(opt.split("=", 1) for opt in args.option or [])
     if args.ro:
         options["read-only"] = "yes"
+    if args.force:
+        options["force"] = "yes"
     parse_ro_option_as_read_only(options)
     assignment.options = options
 
@@ -679,6 +681,15 @@ def get_parser(device_class=None):
         help="Alias to `assign --required` for backward " "compatibility",
     )
 
+    attach_parser.add_argument(
+        "--force",
+        "-f",
+        dest="force",
+        action="store_true",
+        default=False,
+        help="Allow attaching devices to dom0",
+    )
+
     mode_parser = assign_parser.add_mutually_exclusive_group()
     mode_parser.add_argument(
         "--ask",