Description of problem:
Create a VM and edit its boot order, there is no items show there.
It should have all current boot order items list there and allow user to drag it.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. edit VM boot order in VM details tab
2.
3.

Actual results:
no boot order while editing vm boot order

Expected results:
all available boot order items are listed while editing the boot order

Additional info: