vos setaddrs: notice unexpected errors

vos setaddrs: notice unexpected errors

Currently 'vos setaddrs' only prints a message and errors out if the
VL_RegisterAddrs call fails with certain error codes (VL_MULTIPADDR
and RXGEN_OPCODE). But if we get something else like an access error,
we should of course print that out, instead of reporting success.

Change-Id: Id90c65604289651d9f20fb1ab2c706446162f324
Reviewed-on: http://gerrit.openafs.org/7322
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: Tom Keiser <tkeiser@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementix.org>