tests: Add new options to OpenLineage test operator

[kacpermuda]

Some changes to the operator used in system tests only !

Added possibility to assert lack of event, count of events (exact, >= and <=), added ability to specify optional fields and fields that need to be absent. Fast_fail mode is no longer default, we'll see errors for all events. Added a way to compare multiple actual events (added way to sort them) against exact list of expected events - useful for mapped tasks.

Adjusted operators to take advantage of those new changes (and some recent OL changes, like inlet/outlet translation), adjusted templates as well.

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[mobuchowski]

Thanks for improving the testing environment!

[kacpermuda]

Test failures are unrelated, from main, all from common.ai provider: ModuleNotFoundError: No module named 'langchain'