viced: Improve deleted client log messages

viced: Improve deleted client log messages

Change the information logged related to deleted clients to be a
little more useful. In particular this includes adding the client and
host refcounts, to help see if the cause is a reference count leak.

Reviewed-on: http://gerrit.openafs.org/4583
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 047cc473037efa62fa7698878e055ca4665e85ef)

Change-Id: I3bfcf49587f826129979b81de95b92cb2b332790
Reviewed-on: http://gerrit.openafs.org/4593
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>