Set default type value to DATABLOCK for Image resource

one/resource_image.go

@@ -25,6 +25,7 @@ func resourceImage() *schema.Resource {
 			"type": &schema.Schema{ // OS, CDROM, DATABLOCK, KERNEL, RAMDISK, CONTEXT
 				Type:     schema.TypeString,
 				Optional: true,
+				Default:  "DATABLOCK",
 			},
 			"path": &schema.Schema{
 				Type:     schema.TypeString,