IPMINative to use the new ManagementInterface

Set the new ManagementInterface to the IPMINative driver. As the only
vendor method of the IPMINative driver was the set_boot_device, the
vendor interface is not needed anymore and was removed.

Also, before the 'persistent' parameter of the _set_boot_device() method
was ignored, this patch is fixing it.

Implements: blueprint new-management-interface
Change-Id: I4f3d13f1e0bebda011b3bfbb71ecd7507ca44c39
Merge "IPMINative to use the new ManagementInterface"