DATACOUCH-675 - Factor out interfaces for common methods.

[mikereiche]

This is the same as the earlier DATACOUCH-645, but with the expiryExpression bug-fix and tests removed.

Added interfaces for apis on core objects which are common among
many objects. For instance withExpiry and withExpiryAnnotation on all the
insert/replace/upsert/remove objects. The definition of an interface
simplifies testing of all the possible combinations - instead of having
four (or eight, counting Reactive), there is one interface to test
them all.

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