[SPARK-31061][SQL] Provide ability to alter the provider of a table #27822
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What changes were proposed in this pull request?
This PR adds functionality to HiveExternalCatalog to be able to change the provider of a table.
Why are the changes needed?
This is useful for catalogs in Spark 3.0 to be able to use alterTable to change the provider of a table as part of an atomic REPLACE TABLE function.
Does this PR introduce any user-facing change?
No
How was this patch tested?
Unit tests