ipwrapper: workaround for ip -o link bug with intel sriov

There is currently an iproute bug ( https://bugzilla.redhat.com/1045032 )
when reporting intel SR-IOV capable devices that makes the report be:

    [root@dell-r210ii-07 ~]# ip -o l
    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN \    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    2: p1p1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000\    link/ether 90:e2:ba:04:29:88 brd ff:ff:ff:ff:ff:ff
        vf 0 MAC d2:e9:dd:53:3d:a5
        vf 1 MAC aa:f7:de:38:1c:f9
        vf 2 MAC 22:44:45:db:ff:8a
        vf 3 MAC a2:59:8d:b9:17:30
        vf 4 MAC 4a:d8:39:86:38:d5
        vf 5 MAC 6e:4e:cc:21:74:7f
        vf 6 MAC d6:75:14:15:1d:8b
    3: p1p2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000\    link/ether 90:e2:ba:04:29:89 brd ff:ff:ff:ff:ff:ff
        vf 0 MAC 66:0c:f8:af:e4:bb
        vf 1 MAC 2e:4e:a5:99:c1:33
        vf 2 MAC 46:ff:0f:cc:8e:a5
        vf 3 MAC e6:b6:67:e6:54:7d
        vf 4 MAC 16:fb:b0:a2:c7:55
        vf 5 MAC 16:58:73:bd:15:8f
        vf 6 MAC ce:d1:fe:b9:5d:cb
    4: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000\    link/ether d0:67:e5:f0:82:44 brd ff:ff:ff:ff:ff:ff

As seen above, instead of showing the vf extra information in the same line
escaping with '\', it prints extra lines.

Change-Id: I500404ee6cb072211c714c5636e92dbf0e8d4f2f
Signed-off-by: Antoni S. Puimedon <asegurap@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/22561
Reviewed-by: Dan Kenigsberg <danken@redhat.com>