freifunk-common: neigh.sh - show hostnames

if nameservice-plugin is configured, we read
in all locally known hostnames and show them
in the output:

root@stuttgarter-core:~# neigh.sh
Local          Remote         vTime  LQ       NLQ      Cost Host
10.230.105.241 10.230.105.246 138851 1.000000 1.000000 1024 stuttgarter-rhnk.olsr
10.230.105.241 10.230.105.247 135717 1.000000 1.000000 1024 stuttgarter-emma.olsr
10.230.105.241 10.230.105.244 138309 1.000000 1.000000 1024 stuttgarter-sued.olsr
10.230.105.241 10.230.105.245 136001 1.000000 1.000000 1024 stuttgarter-west.olsr
10.230.105.241 10.230.105.242 134818 1.000000 1.000000 1024 stuttgarter-nord.olsr
10.230.105.241 10.230.105.243 137187 1.000000 1.000000 1024 stuttgarter-ost.olsr
10.230.105.241 10.230.105.250 139984 1.000000 1.000000 1024 stuttgarter-hof2.olsr
10.230.105.241 10.230.105.251 138294 1.000000 1.000000 1024 stuttgarter-stra2.olsr

Local               Remote              vTime  LQ       NLQ      Cost Host
2001:bf7:820:901::1 2001:bf7:820:950::1 139703 1.000000 1.000000 1024 stuttgarter-rhnk.olsr
2001:bf7:820:901::1 2001:bf7:820:960::1 139541 1.000000 1.000000 1024 stuttgarter-emma.olsr
2001:bf7:820:901::1 2001:bf7:820:990::1 140415 1.000000 1.000000 1024 stuttgarter-hof2.olsr
2001:bf7:820:901::1 fde6:24f1:a388::1   141338 1.000000 1.000000 1024

the filenames for the olsrd hosts-file is taken from uci
and falls back to sane defaults.

Signed-off-by: Bastian Bittorf <bittorf@bluebottle.com>