Revert "Convert from using nvldbentry to uvldbentry"

Revert "Convert from using nvldbentry to uvldbentry"

This reverts commit 4f1efdc8b73ed734197925766530d033c6f9794a.

The conversion to uvldbentry produced too many negative side
effects.  Revisit support for multi-homed servers when vos
is executed from a machine that can only see a random subset
of the addresses assigned to the server in the future.

(cherry picked from commit 9e539fbea456cdb416a487364d67ab54da1249a7)
Reviewed-on: http://gerrit.openafs.org/4131
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Change-Id: I9211d919e4584c1dac388155b6f4609f50fe603c
Reviewed-on: http://gerrit.openafs.org/4133
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>