oq_create_db: add support for RedHat derivates
oq_create_db: add support for RedHat derivates


Former-commit-id: bea9295f1121c0502d6302866c782442265fe01c [formerly 5695cc7e9f4502df625c61a241c3a7aecc8012a1] [formerly 5695cc7e9f4502df625c61a241c3a7aecc8012a1 [formerly ccceb1cf4e36cf58509ab33597d64f1a2f5957de]]
Former-commit-id: 1f618b5b39fde061013e580839da95c81feb4072
Former-commit-id: f80f0b1c330d1db5a11a33460e814cbf9e0d9689
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine