Added a sanity check on the loss maps generation [skip hazardlib][demos]
Added a sanity check on the loss maps generation [skip hazardlib][demos]


Former-commit-id: 452c784636a95564103bb86f3c0bfb223248d91a [formerly 524b74d3bbcdc28fcda0460e290a8c9d2489fb64]
Former-commit-id: 09753321be89cde042bc4eb0a3cfc07989bc9868
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine