datastore_upsert: dry_run parameter #4407
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We have users that would like to test loading data into a datastore table for any errors without actually inserting/updating any data. This lets them make sure they've fixed all errors in the data they're loading before the publishing their new records.
This PR adds a
dry_runparameter todatastore_upsert, default False. When set to True the transaction will be rolled back instead of committed to the datastore DB. Tests included.