r7932: don't use the nbt called name as server name, for dcerpc_server_name()

r7932: don't use the nbt called name as server name, for dcerpc_server_name()
in the ncacn_np trnaport

it's now supported to use the ip address in smbtorture for ncacn_np tests
that use dcerpc_server_name(),

and we can now pass the dns host name in the tree connect when we have the dns name
on the smbtorture command line

metze
(This used to be commit e29edbc7e62c738564ae842c9c01c969f5c70e5d)