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.

Change-Id: Idec5f1a3126266609edb3f657c34c160086ecbe7
Reviewed-on: http://gerrit.openafs.org/4131
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>