virsh: Switch cmdDomIfAddr() to vshTable

virsh: Switch cmdDomIfAddr() to vshTable

The aim of cmdDomIfAddr() is to obtain IP addresses for given
domain and then print (ifName, MAC, type, IP Address) tuple.
Preferably in an aligned table. This is hard to do with printf
style of spacing ("%-NNs") since the interface name (ifName) can
vary a lot in length. Fortunately, we have vshTable which is
designed to handle this case.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>