LU-6225 test: test-framework does not cleanup for failed tests

LU-6225 test: test-framework does not cleanup for failed tests

adding reset_fail_loc to error_noexit() func in test-framework
which resets fail_loc and makes sure that the next test
will be started with no error injected.

Xyratex-bug-id: MRP-2079
Signed-off-by: gaurav mahajan <gaurav.mahajan@seagate.com>
Change-Id: I8cadd21a794d0eb429aee4734d47bd56caf0b8fe
Signed-off-by: gaurav mahajan <gaurav.mahajan@seagate.com>
Reviewed-on: http://review.whamcloud.com/13692
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>