LU-2193 mdt: replace fid_build_from_res_name

We miss to replace fid_build_from_res_name() with new
function fid_extract_from_res_name() in mdt_handler.c

Signed-off-by: Fan Yong <fan.yong@intel.com>
Change-Id: I74804c61361b6c03d4dccd732bce96d9b57f037b
Reviewed-on: http://review.whamcloud.com/6565
Reviewed-by: Jian Yu <jian.yu@intel.com>
Tested-by: Hudson
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>