Added a field task_info.sent
Added a field task_info.sent


Former-commit-id: 4cc87aa7845c67daf51edfc07088fa4a01cdd07d [formerly 2825ac8aebdb1706b15dd2ac6dcc30c1b6904f0f]
Former-commit-id: 98261a2c8ac408d1bdf5567d7615298be6e8665c
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine