LU-4441 test: improve run-llog.sh to print more information

LU-4441 test: improve run-llog.sh to print more information

Improve run-llog.sh script so that it can print more useful
information when "Module llog_test is in use" happens again.

Signed-off-by: Emoly Liu <emoly.liu@intel.com>
Change-Id: Id07e253a6f22b6a7235ab6d41a30fe701286f8d7
Reviewed-on: http://review.whamcloud.com/9966
Tested-by: Jenkins
Reviewed-by: Jian Yu <jian.yu@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>