Failed to insert the SCSI device into the specified HBA controller
because that setting the params "drive_bus" is to specify the HBA
the controller then call method list_missing_named_buses of
DevContainer to search HBA is used by iterating DevContainer.__buses
list. But the __buses list didn't change after hotplugging since calling
images_define_by_params and calling simple_hotplug are not used by
matching way, so the __buses list is still using the same.
Signed-off-by: NYongxue Hong <yhong@redhat.com>