LU-3508 test: small fix for sanity.sh test_101c

LU-3508 test: small fix for sanity.sh test_101c

Filter out those "found no match" proc entries in sanity.sh test_101c
and do some code cleanup.

Signed-off-by: Liu Ying <emoly.liu@intel.com>
Change-Id: Ie56c058318c52c8809a21ed242e9bb797b7d421a
Reviewed-on: http://review.whamcloud.com/6854
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Alexey Lyashkov <alexey_lyashkov@xyratex.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>