Fix vdi_type and image_format for udevSR

Add `vdi_type` on udevVDI
Add `image_format` for udevVDI

Signed-off-by: Damien Thenot <damien.thenot@vates.tech>

Author: Nambrok

drivers/udevSR.py

@@ -153,6 +153,10 @@ def load(self, location) -> None:
         self.utilisation = 0
         self.label = self.path
         self.sm_config = {}
+        self.vdi_type = "phy" # We give phy but there is a special case in blktap2.py:VDI.tap_wanted() for udevSR
+        self.image_format = "raw"
+        self.sm_config["image-format"] = self.image_format
+
         try:
             s = os.stat(self.path)
             self.deleted = False