LU-832 test: Add error check when running run-llog.sh

LU-832 test: Add error check when running run-llog.sh

Add error status check in sanity test_60a when calling
run-llog.sh

Test-Parameters: trivial

Change-Id: I1296907c8892b7dd54dac37045d8a7c4e03b1f52
Signed-off-by: Wei Liu <wei3.liu@intel.com>
Reviewed-on: https://review.whamcloud.com/28412
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>