changed run_job to use subprocess.check_call (to properly raise errors if the job run through bin/openquake fails)
changed run_job to use subprocess.check_call (to properly raise errors if the job run through bin/openquake fails)


Former-commit-id: 49bbb788e2cefba9c9cb49a556f8a5bae18ba122
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine