LU-8903 tests: racer test_1 to drop all error messages

Filtered and dropped all Segmentation fault and Bus error
messages. Used "export LANG=C" to display messages are in
English instead of the local language.

Test-Parameters: trivial mdtcount=1 testlist=racer,racer

Seagate-bug-id: MRP-3009
Signed-off-by: Chennaiah Palla <chennaiah.palla@seagate.com>
Change-Id: Ibef083870634f4c8dd6b86e6aa91b5978f27c656
Reviewed-by: Ashish Purkar <ashish.purkar@seagate.com>
Reviewed-by: Elena V. Gryaznova <elena.gryaznova@seagate.com>
Reviewed-by: Ujjwal Lanjewar <ujjwal.lanjewar@seagate.com>
Reviewed-on: https://review.whamcloud.com/24139
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>