Update CPA adjustments to use region specific gmm tree
Because there are asymmetric weights being used for NGA-East adjustments (50%) and coastal plain adjustments (25%), we need to manage the logic trees using region-specific GMM logic trees.
Because there are asymmetric weights being used for NGA-East adjustments (50%) and coastal plain adjustments (25%), we need to manage the logic trees using region-specific GMM logic trees.
