Add Spark 3 SQL tests#1156

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rdblue merged 9 commits intoapache:masterfrom

rdblue:add-spark-3-ddl-tests

Jul 8, 2020

Commits on Jul 1, 2020

Spark: Add tests for create, alter, insert, and select.
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Commits on Jul 2, 2020

Commits on Jul 7, 2020

Remove work-around for SPARK-32168.
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