fix assertAlmostEqual in DmgDistTaxonomy
fix assertAlmostEqual in DmgDistTaxonomy


Former-commit-id: ddc85ad2a48081bee8b72920d3715a27936c2fe2 [formerly d2571227892dd4abce58c228106f3edaa561bf0a]
Former-commit-id: a56854d88bfd364ca3876ca49fddecc0eaff1cc9
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine