minor fix to run_tests
minor fix to run_tests


Former-commit-id: 85aa14c6760ab21ceb9446fc5c8e2848e24ebb19 [formerly e9bc85211d2a58dbac312c76dde10d0cb6a9a640]
Former-commit-id: 980fc69e7a8b1ea7bfa2d0d647f5a1b874611d06
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine