Introduced the environment variable OQ_ENGINE_MODE
Introduced the environment variable OQ_ENGINE_MODE


Former-commit-id: 15abce664b5b7d05f8f649c09edde0a289ddc2d5 [formerly b7e0861617b2c679c5151c52b1aa30f5b594286a] [formerly b7e0861617b2c679c5151c52b1aa30f5b594286a [formerly db13a12d15babac31e8d1c54aa91d34eb0f0abe4]]
Former-commit-id: 502ab5146950241a0bf78143ba1516b31ae8315a
Former-commit-id: 07229898a19305a0b3c2565dac523e63718288cd
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine