hnbgw: vty conformance: rename iuh 'bind' command to 'local-ip'

The standard osmo VTY terminology is 'remote-ip', 'remote-port', 'local-ip',
'local-port'. Conform to that. osmo-hnbgw is so far not rolled out widely, so
it makes sense to do this now.

Change-Id: Ifda2653bf58044552a5f1477cd7008dec3fb9100
3 files changed