Replace HistoryRetentionCollectionDefault *bool with a constant

Using pointers to primitives to signal that something is an optional field is quite ugly. We should create a constant with 3 levels that use a uint8; HistoryRetentionCollectionDefaultUnset, HistoryRetentionCollectionDefaultEnabled, HistoryRetentionCollectionDefaultDisabled.

Or something like that. There is prior art for doing this in the SDK already.