CMR-4985: Refactored low-level data structures to accomodate new UMM-Var 1.2 dimension metadata.
CMR-4985: Refactored low-level data structures to accomodate new UMM-Var 1.2 dimension metadata.

nasa/Common-Metadata-Repository,nasa/Common-Metadata-Repository,nasa/Common-Metadata-Repository,nasa/Common-Metadata-Repository,nasa/Common-Metadata-Repository,nasa/Common-Metadata-Repository