Improved ClassicalRiskCase3TestCase to check the average losses
Improved ClassicalRiskCase3TestCase to check the average losses


Former-commit-id: 24cf6d1e94037cb7b6a72782133c92de9fc4b0b8
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine