Added support for GMF stats
Added support for GMF stats


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Former-commit-id: 138d236d88b24eabc83a74085842dfb0c291ceb6
Former-commit-id: 35e0c77b3b3a931462e03e56bcdefffc7f599f3a
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine