SAT: Introduce new way to compare records based on PK

[keu]

Tell us about the problem you're trying to solve

Incremental and full refresh tests currently assume that records remain unchanged in streams during the test. This is false in many cases and is not what we should test. Instead, SAT should use PKs and compare records only based on PKs when it is possible.

Describe the solution you’d like

At least full refresh test should compare records using PKs. In case PKs are not defined in the catalog the test should use the old algorithm.

Describe the alternative you’ve considered or used

Fix SAT tests forever.