568 Update hv_kvm to handle output from qemu >= 1.6.0
568 Update hv_kvm to handle output from qemu >= 1.6.0

In qemu 1.6 and later, qemu info migrate changed from
    ...
    transferred ram: 980546 kbytes
    remaining ram: 0 kbytes
    total ram: 1049024 kbytes
    ...
to
    transferred ram: 61460 kbytes
    throughput: 671.42 mbps
    remaining ram: 358212 kbytes
    total ram: 1049672 kbytes
    ...

This stops migrates from showing progress for memory transfers that
take a long time. Update the regexp to handle this (should work with
up to at least qemu 2.7)

Thanks to danielk_lists@z9d.de for the fix.

Signed-off-by: Brian Foley <a00e555871a6a538e97f8c44307104c884f8e869@google.com>
Reviewed-by: Viktor Bachraty <a13ea37fcfcda126dc54f94389ded93f402eee93@google.com>

ganeti/ganeti,ganeti/ganeti,onponomarev/ganeti,mbakke/ganeti,mbakke/ganeti,andir/ganeti,yiannist/ganeti,onponomarev/ganeti,ganeti/ganeti,andir/ganeti,mbakke/ganeti,yiannist/ganeti,yiannist/ganeti,andir/ganeti