Added a test for engine.run_calc
Added a test for engine.run_calc


Former-commit-id: 6cd8721e152cefa1d0effa00bb1005bfd3d1cf52 [formerly 7ef36e184740ed9e187a3a1b6cac888fd5c05048]
Former-commit-id: a748ce045d47a552372cff93b6cf0edfee473aa1
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine