restored engine_tools cli
restored engine_tools cli


Former-commit-id: fa54cce5e32d4adf085f8c5ebd7cefb9ec3b2c32 [formerly 16d539d1635f6f3cc86ab1d80c78562c852b3a55]
Former-commit-id: 80829ae046cec1ffeee8be9077df10d8a7455c45
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine