[Memoization 9/n] Add version_strategy as an arg to pipeline definition.
Summary: Considering we're keeping backcompat alive for a long time, and this is super low-cost, makes sense to support it.
Test Plan: added test with using version_strategy on pipeline decorator.
Reviewers: sandyryza, alangenfeld
Reviewed By: sandyryza
Differential Revision: https://dagster.phacility.com/D9216