vol: Log ignored dirs that look like partitions

vol: Log ignored dirs that look like partitions

If we see a /vicep*-like directory when we VAttachPartitions, and we
ignore it because it lacks an AlwaysAttach, log that we ignored it.
This may make things less confusing to admins that just try to create
a /vicep* directory and don't know why it doesn't work.

Feature suggested by Jason Edgecombe.

FIXES 128221

Reviewed-on: http://gerrit.openafs.org/2893
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
(cherry picked from commit 4803d50bdb8cdeae2c3f86b5c09e853573bc49eb)

Change-Id: Ibd9d5b2ba9b8b143e0c13060c1aa45adc8e2bcd1
Reviewed-on: http://gerrit.openafs.org/3572
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 15908bb13f0ae17cf5525a1644456bab16e57881)