ubik: DISK_UpdateInterfaceAddr == server restart

ubik: DISK_UpdateInterfaceAddr == server restart

If a DISK_UpdateInterfaceAddr RPC is received the server that sent
it restarted.  Force the urecovery code to verify the server state.

Change-Id: I465863dc3a52d844b56d576bd55229435556cfd6
Reviewed-on: http://gerrit.openafs.org/11738
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Daria Brashear <shadow@your-file-system.com>
Reviewed-by: Jeffrey Hutzelman <jhutz@cmu.edu>
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 30667a5d7b86b29f9aafe2b490d89b8e01bfc541)
Reviewed-on: http://gerrit.openafs.org/11774
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Chas Williams <3chas3@gmail.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>