CA-239891: Fix management_device on Pool.eject
CA-239891: Fix management_device on Pool.eject

For management on VLAN on a Bond take the device name
from primary_slave of bond.

Signed-off-by: Sharad Yadav <0ab5d8dd51ae0f2f9ed283cbbbb7a94d110e3347@citrix.com>

srowe/xen-api,euanh/xen-api,srowe/xen-api,euanh/xen-api,euanh/xen-api,euanh/xen-api,euanh/xen-api,srowe/xen-api,srowe/xen-api,euanh/xen-api,srowe/xen-api