LU-1400 test: obdfilter-survey tests fail but still green

LU-1400 test: obdfilter-survey tests fail but still green

obdfilter-survey tests are failing but appear green in Maloo.
ENOSPACE errors are not being properly reported.

Add the "set -e" flag to make obdfilter-survey fail on errors.

Test-Parameters: testlist=obdfilter-survey
Signed-off-by: Keith Mannthey <keith@whamcloud.com>
Change-Id: I83666d085136178737727080a1a3b55768fb13a7
Reviewed-on: http://review.whamcloud.com/3591
Reviewed-by: Yu Jian <yujian@whamcloud.com>
Tested-by: Hudson
Reviewed-by: Li Wei <liwei@whamcloud.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>