Check the ruptures only on Ubuntu 16.4
Check the ruptures only on Ubuntu 16.4


Former-commit-id: 35b522b0666b6c4fc7887aed5263de2cbea49479 [formerly b97793f58155970ec42b9157d5eae55db795196b]
Former-commit-id: 9c8d1522a3885cf2caedfcf97324d478c2788753
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine