[Testing Improvements] Add datatypes tests for each <env>

[seanpreston]

• [ ] Add datatype datasets for each env e.g.

          # Numeric
          - name: int_column
            data_categories: [system]
          - name: float_column
            data_categories: [system]
          # - name: serial_column
          #   data_categories: [system]
          # Monetary
          - name: money_column
            data_categories: [system]

• [ ] Add tests for datatype + masking strategy permutation coverage