staging/lustre: Add newline to LU_OBJECT_DEBUG() message

LU_OBJECT_DEBUG expects non \n terminated message from the caller,
so it should add it's own to keep debug logger happy.

Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-on: http://review.whamcloud.com/19960
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8094


Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>