[delete_table-test] parameterized DeleteTableWhileScanInProgress
[delete_table-test] parameterized DeleteTableWhileScanInProgress

Replaced in-body for() loops with parameterized fixture for the
DeleteTableWhileScanInProgress test.

There are no functional changes in this patch.

Change-Id: I5ae2c3a9d2b9711e2788932768a4386cf692f677
Reviewed-on: http://gerrit.cloudera.org:8080/5455
Reviewed-by: Alexey Serbin <864f6b82bd94e8dda64141d4274519ee66e0102e@cloudera.com>
Tested-by: Kudu Jenkins

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