Adds support for the Kudu DECIMAL type introduced in Kudu 1.7.0.
Note: Adding support for Kudu decimal min/max filters is
tracked in IMPALA-6533.
Tests:
* Added Kudu create with decimal test to AnalyzeDDLTest.java
* Added Kudu table_format to test_decimal_queries.py
** Both decimal.test and decimal-exprs.test workloads
* Added decimal queries to the following Kudu workloads:
** kudu_create.test
** kudu_delete.test
** kudu_insert.test
** kudu_update.test
** kudu_upsert.test
Change-Id: I3a9fe5acadc53ec198585d765a8cfb0abe56e199
Reviewed-on: http://gerrit.cloudera.org:8080/9368
Reviewed-by: Dimitris Tsirogiannis <dtsirogiannis@cloudera.com>
Tested-by: Impala Public Jenkins
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