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HiveCatalog does not include format-version for Iceberg tables in the table's parameters, therefore the output of SHOW CREATE TABLE may not replicate the original table. This patch makes sure to add it to both the SHOW CREATE TABLE and DESCRIBE FORMATTED/EXTENDED output. Additionally, adds ICEBERG_DEFAULT_FORMAT_VERSION variable to E2E tests, deducting from IMPALA_ICEBERG_VERSION environment variable. If Iceberg version is at least 1.4, default format-version is 2, before 1.4 it's 1. This way tests can work with multiple Iceberg versions. Testing: * updated show-create-table.test and show-create-table-with-stats.test for Iceberg tables * added format-version checks to multiple DESCRIBE FORMATTED tests Change-Id: I991edf408b24fa73e8a8abe64ac24929aeb8e2f8 Reviewed-on: http://gerrit.cloudera.org:8080/23514 Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>