redhat: add missing deps and fix doc
redhat: add missing deps and fix doc

Former-commit-id: a0fe932c7b63ff4a01c6b2c4a9304052ee3324d2 [formerly 543cc3ca5cf6a0bec614522b35382da83db4107e]
Former-commit-id: 4bf19f20e07cb6954e61cdc8df8684e92c5a2c44
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine