qa_tests: added bcr_unittest (based on files in demos)
qa_tests: added bcr_unittest (based on files in demos)


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Former-commit-id: 4974bb41a19c4e4eeb2706cfffc9f322d818488d
Former-commit-id: 4c4b403be15be018d0d744ff7b9fcd5bac2937dc
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine